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provided by operating activities: Issuance of common stock warrants in connection with Senior Term Facility Advertising Costs Advertising expense Advertising Expense Accounts receivable, allowance for doubtful accounts Accounts Receivable, Allowance for Credit Loss, Current Amortization of debt discount Amortization expense of intangible assets Antidilutive Securities [Axis] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Potential common stock equivalents (in shares) Antidilutive Securities, Name [Domain] Pharos Asset Acquisition [Abstract] Consideration [Abstract] Total consideration Asset Acquisition, Consideration Transferred Transaction costs Asset Acquisition [Axis] Impairment of Long-Lived Assets and Intangibles [Abstract] Asset Impairment Charges [Abstract] Purchase Price Allocation Asset impairment charges Asset Impairment Charges Asset Acquisition [Line Items] Asset Acquisition [Table] Asset Acquisition [Domain] Pharos Asset Acquisition Assets Total assets Assets Assets Assets [Abstract] Total current assets Assets, Current Current assets: Basis of Presentation and Summary of Significant Accounting Policies Basis of Presentation and Principles of Consolidation Cash and Cash Equivalents, at Carrying Value [Abstract] Net (decrease) increase in cash, cash equivalents and restricted cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Cash and Cash Equivalents [Line Items] Cash and Cash Equivalents [Abstract] Cash, cash equivalents and restricted cash at end of year Cash, cash equivalents and restricted cash at beginning of year Total cash and restricted cash presented in the consolidated statements of cash flows Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Cash and Cash Equivalents Cash and Cash Equivalents, Policy [Policy Text Block] Cash and cash equivalents Restricted Cash Cash and Cash Equivalents, 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33,801,045 shares issued and outstanding at December 31, 2021 and 2020, respectively Common stock, shares authorized (in shares) Common Stock, Shares Authorized Common stock, shares outstanding (in shares) Common Stock, Shares, Outstanding Concentration Risk [Table] Concentration Risk Type [Domain] Concentration risk percentage Concentration Risk Benchmark [Domain] Concentration Risk Type [Axis] Concentration Risk [Line Items] Concentration Risk Benchmark [Axis] Concentrations of Credit Risk and Major Customers Contract with Customer, Liability [Abstract] Deferred revenues Contract with Customer, Liability, Current Contract liabilities recognized as revenue Long-term contract liabilities Number of common shares issued on conversion of preferred stock (in shares) Cost of revenues Cost of revenues Credit Facility [Axis] Credit Facility [Domain] State Federal Current income tax Current Income Tax Expense (Benefit) Current [Abstract] Customer Lists [Member] Pharos Customer Lists [Member] Customer Concentration Risk [Member] Customer Relationships [Member] Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Table] Disaggregation of Revenue Disaggregation of Revenue [Abstract] Basis spread on variable rate Debt instrument term Debt instrument term Debt Instrument [Axis] Frequency of payment Face amount of debt Face amount of debt Schedule of Long-term Debt Instruments [Table] Debt Instrument [Line Items] Third party costs and lender fees Debt Instruments [Abstract] Fixed interest rate Interest rate percentage Maturity date Maturity date Installment monthly payment amount Debt Instrument, Periodic Payment Unamortized debt discount Debt Instrument, Name [Domain] Deferred tax liability Deferred income tax Deferred Federal, State and Local, Tax Expense (Benefit) Debt Issuance Costs Deferred Charges, Policy [Policy Text Block] Property and equipment Deferred Tax Assets, Property, Plant and Equipment Deferred [Abstract] Federal Deferred Federal Income Tax Expense 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[Member] Equipment [Member] Equity Component [Domain] Stockholders' Equity [Abstract] Fair Value Measurements Fair Value Measurements [Abstract] Fair Value Measurements Fair Value Disclosures [Text Block] Finite-Lived Intangible Assets, Net [Abstract] Components of Intangible Assets [Abstract] Amortization period of intangible assets 2025 Finite-Lived Intangible Asset, Expected Amortization, Year Four 2023 Estimated useful life Accumulated amortization Finite-Lived Intangible Assets, Accumulated Amortization Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets [Line Items] 2024 Estimated amortization expense [Abstract] 2026 Balance 2022 Finite-Lived Intangible Asset, Expected Amortization, Year One Finite-Lived Intangible Assets by Major Class [Axis] Intangible assets, net Finite-Lived Intangible Assets, Net Estimated Future Amortization Expense for Intangible Assets Furniture and Fixtures [Member] Loss on disposal of property and equipment Gain (Loss) on Disposition of Property Plant Equipment Gain on debt extinguishment Gain (Loss) on Extinguishment of Debt Unallocated expenses General and administrative Total Assets by Reportable Segment [Abstract] Geographic Areas, Long-Lived Assets [Abstract] Geographic Distribution [Domain] Foreign [Member] Domestic [Member] Geographic Distribution [Axis] Intangible Assets and Goodwill Goodwill Goodwill Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block] Goodwill impairment Intangible Assets and Goodwill [Abstract] Gross profit Gross profit Gross Profit Impairment of Long-Lived Assets and Intangibles Loss before income tax expense Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Estimated tax positions subject to audit Income Taxes [Abstract] Income Tax Authority [Axis] Consolidated Statements of Operations [Abstract] Income Tax Authority [Domain] Assessment amount Income Tax Examination, Liability (Refund) Adjustment from Settlement with Taxing Authority Income Tax Contingency [Table] Income Tax Contingency [Line Items] Income Taxes Income Tax Disclosure [Text Block] Income tax expense Income tax expense Income Tax Expense (Benefit) Components of Income Tax Expense (Benefit) [Abstract] Income Taxes Deferred revenues Accounts receivable Increase (Decrease) in Accounts Receivable Accounts payable Increase (Decrease) in Accounts Payable Inventories Increase (Decrease) in Inventories Changes in operating assets and liabilities: Accrued expenses and other liabilities Increase (Decrease) in Other Accrued Liabilities Prepaid expenses and other assets Increase (Decrease) in Prepaid Expense and Other Assets Increase (Decrease) in Stockholders' Equity [Roll Forward] Intangible assets, net Intangible Assets, Net (Excluding Goodwill) Intangible Assets Intangible Assets, Finite-Lived, Policy [Policy Text Block] Interest expense Interest Expense Interest expense Interest Expense, Debt Cash paid during the year for interest Inventories [Abstract] Inventories Inventory Disclosure [Text Block] Finished goods Inventories Raw materials and work in process Inventories Inventories, net Inventory, Net Schedule of inventory [Abstract] Inventory, Net [Abstract] Interest income LIBOR [Member] Leases 2022 Lessee, Operating Lease, Liability, to be Paid, Year One Total remaining lease payments Lessee, Operating Lease, Liability, to be Paid Renewal term Lessee, Finance Lease, Renewal Term Less: imputed interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Lease term Renewal option term Lessee, Operating Lease, Renewal Term 2024 Lessee, Operating Lease, Liability, to be Paid, Year Three Operating Lease Maturities Lessee, Operating Lease, Liability, Maturity [Table Text Block] 2023 Lessee, Operating Lease, Liability, to be Paid, Year Two Lessee, Lease, Description [Table] Lessee, Lease, Description [Line Items] Lessee, Operating Lease, Description [Abstract] Long-term Debt [Abstract] Long-term Debt, Current and Noncurrent [Abstract] Leasehold Improvements [Member] Leases [Abstract] Total liabilities Liabilities Liabilities and Stockholders' Equity Total liabilities and stockholders' equity Liabilities and Equity Total current liabilities Liabilities, Current Current liabilities: Line of Credit Facility [Line Items] Lender Name [Axis] Line of Credit Facility [Table] Line of Credit Facility, Lender [Domain] Total Assets by Reportable Segment Future minimum principal payments Long-term Debt Long-term Debt Long-term Debt [Text Block] Long-term Debt [Abstract] Future Payments for Long-Term Debt [Abstract] Current portion of long-term debt 2025 Long-Term Debt, Maturity, Year Four 2026 Long-Term Debt, Maturity, Year Five Long-term debt, net of current portion Long-term Debt, Excluding Current Maturities 2024 Long-Term Debt, Maturity, Year Three Machinery and Equipment [Member] Advertising Costs [Abstract] Other Unallocated Assets [Member] Expected Term [Member] Measurement Input Type [Axis] Measurement Input Type [Domain] Risk-Free Rate [Member] Expected Volatility [Member] Estimated Dividend Yield [Member] Activity of Warranty Accrual [Roll Forward] Movement in Standard Product Warranty Accrual [Roll Forward] Long-lived assets Net cash provided by financing activities Net Cash Provided by (Used in) Financing Activities Cash flows from financing activities: Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Cash flows from investing activities: Cash flows from operating activities: Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Net loss Net loss Net Income (Loss) Attributable to Parent Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Other (expense) income, net Nonoperating Income (Expense) Other income (expense): Note Payable [Abstract] Note [Member] Notes Payable to Banks [Member] Number of operating segments Number of reporting units Equipment, Computer Hardware and Software [Member] Office Equipment [Member] Current portion of operating lease liabilities Operating lease liability, net of current portion Operating Lease Maturities [Abstract] Cash paid for amounts included in measurement of operating lease liabilities Operating lease right-of-use assets Operating lease costs Weighted average remaining lease term Operating Lease, Weighted Average Remaining Lease Term Total lease liabilities Amortization of right-of-use asset Operating Lease, Right-of-Use Asset, Amortization Expense Operating Segments [Member] Allocated expenses [Abstract] Operating expenses: Total operating expenses Operating Expenses Income (loss) from operations Income (loss) from operations Operating Income (Loss) Revenue Recognition [Abstract] Operating Leases, Income Statement, Lease Revenue [Abstract] Operating Loss Carryforwards [Line Items] Operating Loss Carryforwards [Table] Operating loss carryforwards Operating Loss Carryforwards Organization and Nature of Business Organization and Nature of Business [Abstract] Deferred revenues and other liabilities Accrued Expenses and Other Current Liabilities [Abstract] Other assets Other Assets, Noncurrent Parent [Member] Payment of deferred financing costs Payments of Financing Costs Cash paid in connection with asset acquisition Payments to Acquire Businesses, Net of Cash Acquired Purchase of property and equipment Payments to Acquire Property, Plant, and Equipment Upfront cash payment Cash payment Plan Name [Domain] Plan Name [Axis] Preferred Stock [Member] Preferred Stock [Member] Series C convertible preferred stock, $0.10 par value; 10,000,000 shares authorized, no shares issued and outstanding Preferred Stock, Value, Issued Series C Convertible Preferred Stock, shares authorized (in shares) Preferred Stock, Shares Authorized Preferred stock, stated value (in dollars per share) Series C Convertible Preferred Stock, par value (in dollars per share) Preferred stock conversion price (in dollars per share) Preferred Stock, Redemption Price Per Share Preferred shares outstanding (in shares) Series C Convertible Preferred Stock, shares outstanding (in shares) Series C Convertible Preferred Stock, shares issued (in shares) Preferred Stock, Shares Issued Prepaid expenses and other current assets Reclassifications Proceeds from long-term debt Proceeds from exercise of stock options Less current portion within accrued expenses and other current liabilities Warranty obligations Product Warranty Liability [Line Items] Product Warranty Liability [Table] Expirations and claims satisfied Standard and Extended Product Warranty Accrual, Decrease for Payments Additions Balance within deferred revenues and other liabilities Total Balance, beginning of year Standard and Extended Product Warranty Accrual Property, Plant and Equipment [Line Items] Property and Equipment Property, Plant and Equipment Disclosure [Text Block] Property and equipment, useful life Property and Equipment [Abstract] Property, Equipment and Depreciation [Abstract] Components of Property and Equipment Long-Lived Tangible Asset [Axis] Long-Lived Tangible Asset [Domain] Property and equipment, net Property and equipment, net Property, Plant and Equipment, Net Property and Equipment Property and equipment, gross Property and Equipment [Abstract] Property, Plant and Equipment, Net [Abstract] Provision for doubtful accounts Accounts Receivable, Credit Loss Expense (Reversal) Repayments of long-term debt Repayments of Long-term Debt Repayments of notes payable Repayment of note payable Engineering and product development Engineering and product development Restricted Cash and Cash Equivalents [Abstract] Restricted cash Restricted Cash Restricted cash Restricted Cash, Current Unvested Restricted Stock Units [Member] Restricted Stock Units [Member] Accumulated Deficit [Member] Retained Earnings [Member] Accumulated deficit Future Undiscounted Fixed Treatment Code Payments Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Future undiscounted fixed payments from international recurring revenue customers Remaining performance obligations Revenue, Performance Obligation Satisfied over Time [Abstract] Remaining Performance Obligation [Abstract] Expected timing of satisfaction period Revenue Recognition Revenue from Contract with Customer [Policy Text Block] Disaggregation of Revenue by Geographical Region Revenue from External Customers by Geographic Areas [Table Text Block] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Revenues Revenues, net Revenues, net Expected term (in years) Expiration period Outstanding Weighted average period of recognition Exercisable Disaggregation of Revenue by Geographical Region [Abstract] Segments, Geographical Areas [Abstract] Sale of Stock [Domain] State sales, use and other taxes Revenue [Member] Stock Option Activity Future Payments for Long-term Debt Accrued Warranty Costs Activity Inventories Schedule of Inventory, Current [Table Text Block] Weighted Average Assumption Used for Grant Date Fair Value of Option Grants Summary of Restricted Stock Unit Unvested Components of Deferred Tax Liability for Federal Income Taxes Reconciliation of Income Tax Expense Components of Income Tax Expense Components of Intangible Assets Schedule of Finite-Lived Intangible Assets [Table] Schedule of Cash and Cash Equivalents [Table] Antidilutive Securities Excluded from Computation of Earnings (Loss) Per Share Accrued Expenses and Other Current Liabilities Schedule of Accrued Liabilities [Table Text Block] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Components of Goodwill Schedule of Goodwill [Table Text Block] Property, Plant and Equipment [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Restricted Cash Restrictions on Cash and Cash Equivalents [Table Text Block] Schedule of Segment Reporting Information, by Segment [Table] Segment Reporting Information by Segment Schedule of Stock by Class [Table] Time Deposit [Member] Secured Debt [Member] Segments [Domain] Segment Reporting Information [Line Items] Business Segments [Abstract] Segment Reporting, Disclosure of Other Information about Entity's Reportable Segments [Abstract] Business and Geographical Reporting Segments [Abstract] Business and Geographical Reporting Segments Segment Reporting Disclosure [Text Block] Results of Operations from Business Segments [Abstract] Selling and marketing Selling and marketing Series C Convertible Preferred Stock [Member] Convertible Preferred Stock Series C [Member] Preferred Series C Shares [Member] Weighted Average Exercise Price per Option [Abstract] Granted (in shares) Weighted-Average Grant Date Fair Value [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Accelerated compensation expense Share-based Payment Arrangement, Accelerated Cost Stock-based compensation Stock-based compensation expense Forfeited and expired (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Forfeited and expired (in dollars per share) Exercised (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Granted (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in 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Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Unvested balance at end of period (in shares) Unvested balance at beginning of period (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Fair Value Assumptions [Abstract] Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Vested (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Risk-free rate Forfeited and expired (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period Number of shares available for issuance (in shares) Exercisable at end of period (in dollars per share) Exercisable at end of period (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number Expected volatility Aggregate intrinsic value of options exercised Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value Weighted average remaining contractual term [Abstract] Outstanding at beginning of period (in shares) Outstanding at end of period (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Outstanding at beginning of period (in dollars per share) Outstanding at end of period (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Weighted-average grant date fair value (in dollars per share) Number of Shares under Options Plan [Abstract] Aggregate intrinsic value of options outstanding Stock option exercise, stock issued (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period Aggregate intrinsic value of options exercisable Award Type [Domain] Stock-Based Compensation Share-based Payment Arrangement [Policy Text Block] Beginning balance (in shares) Ending balance (in shares) Shares, Outstanding Note payable Short-term Bank Loans and Notes Payable Short-term Debt, Type [Axis] Short-term Debt, Type [Domain] Accrued Warranty Costs State [Member] Consolidated Balance Sheets [Abstract] Class of Stock [Axis] Segments [Axis] Statement [Table] Statement [Line Items] Consolidated Statements of Cash Flows [Abstract] Equity Components [Axis] Consolidated Statements of Changes in Stockholders' Equity [Abstract] Exercise of stock options (in shares) Stock issued upon exercise of stock options (in shares) Exercised (in shares) Common stock sold under equity distribution agreement (in shares) Stock Issued During Period, Shares, New Issues Issuance of restricted stock (in shares) Number of shares issued in connection with asset acquisition (in shares) Exercise of stock options Aggregate value of common stock issued in connection with asset acquisition Issuance of restricted stock Beginning balance Ending balance Total stockholders' equity Stockholders' Equity Attributable to Parent Stockholders' Equity Stockholders' equity: Subsequent Event [Member] Subsequent Event Type [Domain] Subsequent Event [Line Items] Subsequent Event Type [Axis] Subsequent Events [Abstract] Subsequent Event [Table] Subsequent Events Sale of Stock [Axis] Subsidiary, Sale of Stock [Line Items] Subsidiary or Equity Method Investee, Sale of Stock by Subsidiary or Equity Investee [Table] Net Operating Loss Carryforwards Supplemental disclosure of cash flow information: Tax Period [Axis] Tax Period [Domain] Tradenames [Member] Accounts Receivable and Allowance for Doubtful Accounts Accounts Receivable [Policy Text Block] Unrecognized tax benefits Use of Estimates Valuation allowance - Deferred tax asset change in amount Variable Rate [Axis] Variable Rate [Domain] Common Stock Warrants [Member] Warrant [Member] Warrants, expected term Warrants, measurement input Warrants and Rights [Abstract] Weighted average shares outstanding - diluted (in shares) Weighted average shares outstanding - basic (in shares) Weighted Average Number of Shares Outstanding, Basic Consolidation Items [Domain] Consolidation Items [Axis] Cumulative Effect, Period of Adoption [Domain] Cumulative Effect, Period of Adoption, Adjustment [Member] Cumulative Effect, Period of Adoption [Axis] Customer [Axis] Maximum [Member] Minimum [Member] Customer [Domain] Statistical Measurement [Domain] Statistical Measurement [Axis] Geographical [Domain] Geographical [Axis] South Korea [Member] KOREA, REPUBLIC OF Cover [Abstract] Document Type Document Annual Report Document Transition Report Entity Interactive Data Current Amendment Flag ICFR Auditor Attestation Flag Document Fiscal Year Focus Document Fiscal Period Focus Document Period End Date Entity Registrant Name Entity Central Index Key Entity File Number Entity Tax Identification Number Entity Incorporation, State or Country Code Current Fiscal Year End Date Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Current Reporting Status Entity Shell Company Entity Filer Category Entity Small Business Entity Emerging Growth Company Entity Public Float Entity Address, Address Line One Entity Address, Address Line Two Entity Address, City or Town Entity Address, State or Province Entity Address, Postal Zip Code City Area Code Local Phone Number Title of 12(b) Security Trading Symbol Security Exchange Name Entity Common Stock, Shares Outstanding Auditor Name Auditor Location Auditor Firm ID Disclosure of accounting policy for the engineering and product development costs it incurs related to long-term supply arrangements, including whether such costs are capitalized or expensed as incurred. The entity also may disclose the aggregate amount of (1) assets recognized for agreements that contractually reimburse the entity for its pre-production design and development costs (2) assets recognized for molds, dies and other tools that the entity owns and (3) assets recognized for molds, dies and other tools that the entity does not own. Engineering and Product Development [Policy Text Block] Engineering and Product Development Goodwill by Segments [Abstract] Components of Goodwill [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Option [Abstract] Stock Options [Abstract] Refers to laser equipment which is placed in service. Lasers Placed-In-Service [Member] Lasers Placed-In-Service [Member] Refers to various technology components used it bringing a product to its final stage. Product Technology [Member] Product Technology [Member] Goodwill [Abstract] Goodwill [Abstract] Economic Injury Disaster Loan ("EIDL") is an assistance program in light of the impact of the COVID-19 pandemic on the Company's business. Economic Injury Disaster Loan [Member] EDIL [Member] Paycheck Protection Program loans are loans authorized by the Coronavirus Aid, Relief and Economic Security Act, Section 7(a)(36) of the Small Business Act (the "CARES Act") to provide forgivable loans to small business. Paycheck Protection Program Loans [Member] PPP Loans [Member] Carrying value as of the balance sheet date of obligations incurred through that date and payable for professional fees and other accrued liabilities amount of expenses incurred but not yet paid classified as other, due within one year or the normal operating cycle, if longer. Accrued Professional Fees Other Accrued Liabilities Professional fees and other Identification of the lender, which may be a single entity (for example, a bank, pension fund, venture capital firm) or a group of entities that participate in the line of credit, including a letter of credit facility. MidCap Financial Trust [Member] MidCap Financial Trust [Member] Represents the number of monthly principal payments plus interest. Debt Instrument, Number of Monthly Principal Payments Plus Interest Number of monthly principal payments plus interest The cash outflow for the extinguishment of long-term borrowing before its maturity. Early Repayment of Debt Prepayment of debt Percentage of prepayment fee if prepayment is made within twelve months. Long-term Debt, Prepayment fee if prepayment is made Within Twelve Months Prepayment fee if prepayment is made within twelve months Fair value of warrants. Warrants, Fair Value Estimated fair value of warrants Represent the written notice period in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Long-term Debt, Notice Period Notice period Amount of minimum net revenue threshold by December 31, 2023 Net Revenue Threshold Increase, Minimum by December 31, 2023 Minimum net revenue threshold by December 31, 2023 Interest rate floor on the debt instrument. Debt Instrument, Interest Rate Floor Interest rate floor Percentage of prepayment fee if prepayment is made between twenty-four months and thirty-six months. Long-term Debt, Prepayment fee if prepayment is made Between Twenty-Four Months and Thirty-Six Months Prepayment fee if prepayment is made between twenty-four months and thirty-six months Percentage of prepayment fee if prepayment is made after thirty-six months and prior to the maturity date. Long-term Debt, Prepayment fee if prepayment is made After Thirty-Six Months Prepayment fee if prepayment is made after thirty-six months Percentage of prepayment fee if prepayment is made between twelve months and twenty-four months. Long-term Debt, Prepayment fee if prepayment is made Between Twelve Months and Twenty-Four Months Prepayment fee if prepayment is made between twelve months and twenty-four months Amount of minimum net revenue threshold will increase. Net Revenue Threshold Increase, Minimum Minimum net revenue threshold Liquidity and Going Concern [Abstract] Refers to tangible personal property used in an office setting example computer also collection of computer programs and related data that provide instructions to a computer, for example, but not limited to, application program, control module or operating system, that perform one or more particular functions or tasks. Computer Hardware and Software [Member] Computers, Hardware and Software [Member] The notice period to cancel the acquisition costs contract agreement with customers by either party, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Notice Period to Cancel Agreement Notice period to cancel contract agreement Refers to the term of credit card transaction settlement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Credit Card Transaction Settlement Term Credit card transaction settlement term Number of major customers of the entity. Concentration Risk, Number of Major Customers Number of major customers Concentration Of Credit Risk [Abstract] Concentration of Credit Risk [Abstract] A customer or a group of external customers with significant concentration. Customer Two [Member] Former International Master Distributor [Member] A customer or a group of external customers with significant concentration. Customer One [Member] Customer One [Member] Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as current. Contract with Customer, Liability, Current, Advance Consideration Short-term contract liabilities The extended product warranties, which generally require additional fees to be paid by the buyer, and other guarantee contracts excluded from the initial recognition and initial measurement requirements. Does not include disclosures for standard product warranties, which typically have substantially shorter periods of time or provide less coverage, or both, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Extended Product Warranty Term Offered warranty period The product warranty, including the approximate term of the product warranty, how the product warranty arose, and the events or circumstances that would require the warrantor to perform under the product warranty, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Standard Product Warranty Term Standard warranty period Product Warranty [Abstract] Product warranty [Abstract] The facility under the lease agreement. Facility One [Member] Remaining term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Lessee, Operating Lease, Remaining Term of Contract Remaining lease term Weighted average incremental borrowing rate for operating lease calculated at point in time. Operating Lease, Incremental Borrowing Rate, Percent Incremental borrowing rate Percentage of customer attrition assumptions used in the excess earnings model. Customer Attrition Customer attrition Name of the entity from which the assets were acquired. RA Medical Systems, Inc. [Member] Amount of deferred revenues in service contracts due after one year or the normal operating cycle, if longer, assumed at the acquisition date. Asset Acquisition, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Revenues Service Contracts Deferred revenues - service contracts Amount of liabilities assumed at the acquisition date. Asset Acquisition, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities Total liabilities assumed Asset Acquisition, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities [Abstract] Liabilities assumed [Abstract] Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the aggregate liabilities assumed. Asset Acquisition Recognized Identifiable Assets Acquired And Liabilities Assumed Net Net assets acquired The weighted average cost of capital is the rate that a company is expected to pay on average to all its security holders to finance its assets. The WACC is commonly referred to as the firm's cost of capital. Importantly, it is dictated by the external market and not by management. Weighted Cost of Capital Percentage Weighted average cost of capital The amount of inventory recognized as of the acquisition date. Asset Acquisition, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory Inventory The number of dermatology practices offering opportunities to increase recurring revenue base and a pathway to gain additional placements for the entity. Number of Dermatology Practices Number of dermatology practices Amount of assets acquired at the acquisition date. Asset Acquisition, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets Total assets acquired The amount of identifiable intangible assets recognized as of the acquisition date. Asset Acquisition, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles Intangible assets Asset Acquisition, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract] Assets acquired [Abstract] Asset Acquisition, Purchase Price Allocation [Abstract] Percentage of estimated customer sales growth assumptions used in the excess earnings model. Estimated Customer Sales Growth Estimated customer sales growth Acquisition of Assets and Liabilities [Abstract] Acquisition of Assets and Liabilities [Abstract] Assessment audits performed by state taxing authorities. Assessment Two [Member] Identified as tax period from March 2014 through April 2020. Tax Period from March 2014 through April 2020 [Member] Tax Period from March 2014 through April 2020 [Member] Assessment audits performed by state taxing authorities. Assessment One [Member] Sales and Use Tax Matters [Abstract] Sales and Use Tax Matters [Abstract] Employee Savings Plan [Abstract] Employee 401(k) Savings Plan [Abstract] Refers to 2016 Stock Incentive Plan, "2016 Plan". Stock Incentive Plan2016 [Member] 2016 Omnibus Incentive Plan [Member] Number of shares issued for each share of convertible preferred stock to be converted. Conversion of convertible preferred stock, Shares Conversion of Series C convertible preferred stock into common stock (in shares) The gross value of stock issued during the period upon the conversion of convertible preferred stock. Conversion of convertible preferred stock, Amount Conversion of Series C convertible preferred stock into common stock The amount of future milestone payments upon the achievement of certain development and related net revenue targets. Future Milestone Payments Future milestone payments Represents the subsequent period of gross profit for future royalty payments from sales, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Subsequent Period of Gross Profit for Future Royalty Payments Subsequent period of gross profit for future royalty payments Represents the percentage of gross profit for future royalty payments for subsequent period. Percentage of Gross Profit for Future Royalty Payments for Subsequent Period Percentage of gross profit for future royalty payments for subsequent period Name of the entity from which the assets were acquired. TheraClear Corporation [Member] Amount of future earnout payments upon achievement of certain annual net revenue milestones. Future Earnout Milestone Payments Future earnout payments The amount of future royalty payments based upon future net product sales. Future Royalty Payments Future royalty payments Subsequent Event [Abstract] Subsequent Events [Abstract] Commission as percentage of gross proceeds from sale of shares sold. Commission as percentage of gross proceeds from sale of shares sold Commission as percentage of gross proceeds from sale of shares sold Offering of "at-the-market" shares as per equity distribution agreement. Equity Offerings at the Market [Member] At-the-Market Equity Offering [Member] Refers to the beneficial percentage of ownership. Beneficial ownership percentage Beneficial ownership percentage The number of new shares issuable in the conversion of stock in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. Convertible Preferred Stock, Shares Issuable upon Conversion Number of common shares issuable on conversion of preferred stock (in shares) Amount of common stock the Company may sell under an equity distribution agreement. Common Stock, Amount of common stock the Company may sell under equity distribution agreement Amount of common stock the Company may sell under equity distribution agreement Operating Loss Carryforwards [Abstract] Operating Loss Carryforwards [Abstract] Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from intangible assets. Deferred Tax Assets Intangible Assets Intangible assets Amount of deferred tax asset attributable to taxable temporary differences from lease liability. Deferred Tax Assets, Lease liability Operating lease liability Amount of deferred tax liability attributable to taxable temporary differences from right of use assets. Deferred Tax Liabilities, Right of use asset Operating lease right-of-use assets Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to permanent differences. Effective Income Tax Rate Reconciliation, Permanent Differences Permanent differences Long-lived Assets [Abstract] Long-lived Assets [Abstract] Refers to Dermatology recurring procedures derives its revenues from the XTRAC procedures performed by dermatologists. Dermatology Recurring Procedures [Member] Dermatology Recurring Procedures [Member] Refers to Dermatology procedures equipment generates revenues from the sale of equipment, such as lasers and lamp products. Dermatology Procedures Equipment [Member] Dermatology Procedures Equipment [Member] Refers to percentage of gross profit. Percentage of Gross Profit Gross profit % Amount of deferred revenue assumed in connection with a asset acquisition in noncash investing and financing activities. Assumed Deferred Revenue Assumed deferred revenues in connection with asset acquisition The increase (decrease) during the reporting period in the aggregate amount of lease liabilities that result from activities that generate operating income. Increase (Decrease) in Operating Lease Liabilities Operating lease liabilities Amount of amortization expense attributable to debt issuance costs and Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense. Amortization of Debt Issuance Costs and Debt Discount (Premium) Amortization of deferred financing costs and debt discount The fair value of warrants issued in noncash financing activities. Warrants Issued Issuance of common stock warrants in connection with Senior Term Facility Shares of stock that is subordinate to all other stock of the issuer. Common Shares [Member] Common Shares [Member] Difference between the fair value of payments made and the carrying amount of debt which is forgiven. Gain (Loss) on Forgiveness of Debt Gain on forgiveness of debt Gain on forgiveness of debt Name of credit facility. Senior Term Facility [Member] Senior Term Facility [Member] Number of warrants (or share units) issued during the current period. Stock Issued During Period, Shares, Warrants Issued Warrants issued (in shares) Entire disclosure for notes payable, Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer. Note Payable [Text Block] Note Payable