Document and Entity Information Statement [Table] Statement [Line Items] Statement Entity Registrant Name Entity Central Index Key Document Type Document Period End Date Amendment Flag Current Fiscal Year End Date Entity Current Reporting Status Entity Filer Category Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Public Float Entity Common Stock, Shares Outstanding Document Fiscal Year Focus Document Fiscal Period Focus Consolidated Balance Sheets Assets [Abstract] Assets Assets, Current [Abstract] Current assets: Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents Total cash and cash equivalents Unrestricted cash and cash equivalents Accounts Receivable, Net, Current Accounts receivable (less reserve for doubtful accounts of $36; including $48 and $123 from related parties as of December 31, 2018 and 2017, respectively) Inventory, Net Inventory Total Prepaid Expense and Other Assets, Current Prepaid expenses and other current assets Assets, Current Total current assets Restricted Cash, Noncurrent Restricted Cash Letter of Credit drawable by the lessor Property, Plant and Equipment, Net Property and equipment, net Total Intangible Assets, Net (Excluding Goodwill) Intangible assets, net Goodwill Balance as of end of period Balance as of beginning of period Goodwill Other Assets, Noncurrent Other non-current assets Assets Total assets Liabilities and Equity [Abstract] Liabilities and stockholders' equity Liabilities, Current [Abstract] Current liabilities: Accounts Payable, Current Accounts payable (including $36 and $0 to related parties as of December 31, 2018 and 2017, respectively) Accrued Employee Benefits, Current Accrued compensation and benefits Other Accrued Liabilities, Current Other accrued expenses (including $226 and $170 to related parties as of December 31, 2018 and 2017, respectively) Total accrued expenses Deferred Revenue, Current Deferred revenue (including $33 and $1,182 with related parties as of December 31, 2018 and 2017, respectively) Long-term Debt, Current Maturities Current portion of long term debt Liabilities, Current Total current liabilities Deferred Revenue, Noncurrent Deferred revenue, net of current portion (including $0 and $1,074 with related parties as of December 31, 2018 and 2017, respectively) Long-term Debt, Excluding Current Maturities Long term debt, net of current portion Long Term Debt Other Liabilities, Noncurrent Other non-current liabilities Liabilities Total liabilities Commitments and Contingencies. Commitments and contingencies Commitment to sponsor agreement Stockholders' Equity, Number of Shares, Par Value and Other Disclosures [Abstract] Stockholders' equity: Common Stock, Value, Issued Common stock, $0.001 par value: Authorized-120,000,000 shares as of December 31, 2018 and December 31, 2017; issued and outstanding- 22,369,036 and 21,707,041 shares as of December 31, 2018 and 2017, respectively Additional Paid in Capital, Common Stock Additional paid-in capital Retained Earnings (Accumulated Deficit) Accumulated deficit Accumulated deficit Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Ending Balance Beginning balance Total stockholders' equity Liabilities and Equity Total liabilities and stockholders' equity Allowance for Doubtful Accounts Receivable, Current Accounts receivable, reserve for doubtful accounts Accounts Receivable, Related Parties, Current Accounts receivable, related parties Accounts Payable, Related Parties, Current Accounts payable, related parties Amount for other accrued liabilities payable to related parties, used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Other Accrued Liabilities, Related Parties, Current Other accrued expenses, related parties The carrying amount of consideration received or receivable from related parties as of the balance sheet date on potential earnings that were not recognized as revenue in conformity with GAAP, and which are expected to be recognized as such within one year or the normal operating cycle, if longer, including sales, license fees, and royalties, but excluding interest income. Deferred Revenue, Related Parties, Current Deferred revenue, current, related parties The noncurrent portion of deferred revenue from related parties, amount as of balance sheet date. Deferred revenue is a liability related to a revenue producing activity for which revenue has not yet been recognized, and is not expected to be recognized in the next twelve months. Generally, an entity records deferred revenue when it receives consideration from a customer before achieving certain criteria that must be met for revenue to be recognized in conformity with GAAP. Deferred Revenue, Related Parties, Noncurrent Deferred revenue, net of current portion, related parties Common Stock, Par or Stated Value Per Share Common stock, par value (in dollars per share) Common Stock, Shares Authorized Common stock, authorized shares Common stock authorized (in shares) Common Stock, Shares, Issued Common stock, shares issued Common Stock, Shares, Outstanding Common stock, shares outstanding Consolidated Statement of Operations and Comprehensive Loss Revenues Total revenue Revenues recognized Cost of Revenue [Abstract] Cost of Goods Sold: Cost of Revenue Total costs of goods sold and services Total Costs of Goods Sold and Services Gross Profit Gross profit Operating Expenses [Abstract] Operating Expense: Research and Development Expense Research and development (including stock compensation of $513, $180, and $59 for the years ended December 31, 2018, and 2017, and 2016, respectively) Selling, General and Administrative Expense Selling, general and administrative (including stock compensation of $4,143, $1,912, and $851 for the years ended December 31, 2018, 2017, and 2016, respectively) Operating Expenses Total operating expenses Operating Income (Loss) Loss from operations Interest Income (Expense), Net Interest income (expense), net Other Nonoperating Income (Expense) Other (expense) income, net Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Loss before income taxes Income Tax Expense (Benefit) Income tax provision Tax expense Total income tax provision (benefit) Net Income (Loss) Attributable to Parent Net loss Net loss Net Income (Loss) Available to Common Stockholders, Basic [Abstract] Reconciliation of net loss to net loss attributable to common stockholders: Temporary Equity, Accretion to Redemption Value, Adjustment Accretion of preferred stock to redemption value Accretion of redeemable convertible preferred stock to redemption value Preferred Stock Dividends, Income Statement Impact Accrued dividends on preferred stock Net Income (Loss) Available to Common Stockholders, Basic Net loss attributable to common stockholders Income (Loss) from Continuing Operations, Per Basic and Diluted Share Net loss per share attributable to common stockholders, basic and diluted Weighted Average Number of Shares Outstanding, Basic and Diluted Weighted-average common shares outstanding, basic and diluted Revenue from Related Parties Related party revenue Related Parties Amount in Cost of Sales Cost of product revenue, related party activity Amount of expense for salary, wage, profit sharing; incentive and equity-based compensation; and other employee benefit. Other employee benefit expense includes, but is not limited to, service component of net periodic benefit cost for defined benefit plan included in cost of goods and services sold. Stock Compensation Expense Included in Cost of Goods and Services Sold Stock compensation expense in cost of goods sold Amount of expense for salary, wage, profit sharing; incentive and equity-based compensation; and other employee benefit. Other employee benefit expense includes, but is not limited to, service component of net periodic benefit cost for defined benefit plan included in research and development expenses. Stock Compensation Expense Included in Research and Development Expenses Stock compensation expense in research and development expenses Amount of expense for salary, wage, profit sharing; incentive and equity-based compensation; and other employee benefit. Other employee benefit expense includes, but is not limited to, service component of net periodic benefit cost for defined benefit plan included in selling, general and administrative expenses. Stock Compensation Expense Included in Selling, General and Administrative Expenses Stock compensation expense in selling, general and administrative expenses Consolidated Statements of Cash Flows Net Cash Provided by (Used in) Operating Activities [Abstract] Operating activities Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net loss Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net loss to net cash used in operating activities: Depreciation, Amortization and Accretion, Net Depreciation and amortization expense Share-based Compensation Stock-based compensation expense Paid-in-Kind Interest Non-cash interest expense Gain (Loss) on Disposition of Property Plant Equipment Gain on disposal of fixed assets The amount of non-cash research and development expenses for issuance of warrants to a vendor. Non-cash Research And Development Expense Non-cash research and development expense for issuance of warrants to a vendor Fair Value Adjustment of Warrants Change in fair value of preferred stock warrants Increase (Decrease) in Operating Capital [Abstract] Changes in operating assets and liabilities: Increase (Decrease) in Accounts Receivable Accounts receivable Increase (Decrease) in Deposits Deposits Increase (Decrease) in Prepaid Expense and Other Assets Prepaid expenses and other assets Increase (Decrease) in Inventories Inventory Increase (Decrease) in Other Noncurrent Assets Other non-current assets Increase (Decrease) in Accounts Payable, Trade Accounts payable Increase (Decrease) in Accrued Liabilities and Other Operating Liabilities Accrued compensation and benefits, other accrued expenses and other liabilities Increase (Decrease) in Deferred Revenue Deferred revenue Increase to deferred revenue Net Cash Provided by (Used in) Operating Activities Net cash used in operating activities Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract] Investing activities Payments to Acquire Property, Plant, and Equipment Purchases of property and equipment Payments to Acquire Businesses, Net of Cash Acquired Acquisitions, net of cash acquired Payments to Acquire Investments Purchase of investments Proceeds from Sale of Property, Plant, and Equipment Proceeds from sale of assets Net Cash Provided by (Used in) Investing Activities Net cash used in investing activities Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract] Financing activities Proceeds from Issuance of Preferred Stock and Preference Stock Proceeds from sale of preferred stock, net of issuance costs Sale of preferred stock Proceeds from Issuance of Common Stock Proceeds from sale of common stock, net of issuance costs Proceeds from Warrant Exercises Proceeds from exercise of stock warrants Proceeds from Stock Options Exercised Proceeds from stock options exercised The cash inflow from Notes Payable and warrants, net of issuance costs. Proceeds from the issuance of Notes Payable and warrants, net of issuance costs Proceeds from the issuance of notes payable and warrants, net of issuance costs Repayments of Notes Payable Payments on notes payable Net Cash Provided by (Used in) Financing Activities Net cash (used in) provided by financing activities Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Net decrease in cash and cash equivalents Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Cash, restricted cash, and cash equivalents at end of period Cash, restricted cash, and cash equivalents at beginning of period Supplemental Disclosures of Cash Flow Information Supplemental cash flow information Interest Paid, Net Cash paid for interest The amount of warrants issued to lenders. Warrants Issued To Lenders Warrants issued to lenders Capital Expenditures Incurred but Not yet Paid Purchases of property and equipment included in accounts payable The fair value amount of common warrants. Fair Value Of Common Warrants Fair value of common stock warrants exercised and reclassified as shares of common stock Consolidated Statements of Redeemable Convertible Preferred Stock and Stockholders' (Deficit) Equity Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity Shares, Outstanding Ending Balance (in shares) Beginning balance (in shares) Stock Issued During Period, Value, New Issues Issuance of stock, net of issuance costs Stock Issued During Period, Shares, New Issues Issuance of stock, net of issuance costs (in shares) Issuance of common stock in initial public offering, net of offering costs (in shares) Value of stock issued as a result of the exercise of warrants. Stock Issued During Period, Value, Warrants Exercised Exercise of preferred stock warrants Shares of stock issued as a result of the exercise of warrants. Warrants, Exercises in Period Exercise of preferred stock warrants (in shares) Stock Issued During Period, Value, Stock Options Exercised Exercise of common stock options Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Exercised (in shares) Exercise of common stock options (in shares) Amount of stock options and vesting restricted stock options exercised. Stock Issued During Period, Value, Stock Options and Vesting Restricted Stock Exercised Exercise of common stock options and vesting restricted stock Number of stock options and vesting restricted stock exercised during the period. Stock Issued During Period, Shares, Stock Options and Vesting Restricted Stock Exercised Exercise of common stock options and vesting restricted stock (in shares) Represents the impact on total equity during the period from adoption of new accounting principles. Effect Of New Accounting Principle During Period Cumulative-effect of adoption of ASU Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Vested (in shares) Vested (in shares) Vesting of restricted stock (in shares) Stock Issued During Period, Value, Conversion of Convertible Securities Conversion of preferred stock to common stock Stock Issued During Period, Shares, Conversion of Convertible Securities Conversion of preferred stock to common stock (in shares) Amount of increase to additional paid in capital due to reclassification of warranty liability to equity upon IPO. Adjustments to Additional Paid In Capital Warrant Liability Reclassified To Equity Warrant Liability reclassified to equity upon IPO Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs Common stock issuance offering costs Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Stock-based compensation expense Aggregate value of stock issued during the period net of offering costs. Stock Issued During Period, Value, New Issues, Offering Cost Issuance of common stock in initial public offering, offering costs Organization and operations Nature of Operations [Text Block] Organization and operations Significant accounting policies Significant Accounting Policies [Text Block] Significant accounting policies Inventory Inventory Disclosure [Text Block] Inventory Property and equipment Property, Plant and Equipment Disclosure [Text Block] Property and equipment Other accrued expenses Accounts Payable and Accrued Liabilities Disclosure [Text Block] Other accrued expenses Income Taxes Income Tax Disclosure [Text Block] Income Taxes Redeemable convertible preferred stock Preferred Stock [Text Block] Redeemable convertible preferred stock Common Stock, warrants, stock-based compensation, stock options, restricted stock and restricted stock units Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Common Stock, warrants, stock-based compensation, stock options, restricted stock and restricted stock units Commitments and contingencies Schedule of Collaborative Arrangements and Non-collaborative Arrangement Transactions [Table] Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items] Commitments and contingencies Collaboration and license arrangements Commitments Disclosure [Text Block] Commitments and contingencies Long Term Debt Long-term Debt [Text Block] Long Term Debt No definition available. Collaboration and license arrangements Collaborative Arrangement Disclosure [Text Block] Collaboration and license arrangements Employee benefit-plans Pension and Other Postretirement Benefits Disclosure [Text Block] Employee benefit-plans Business combinations Business Combination Disclosure [Text Block] Business combinations Goodwill and Intangible Assets Goodwill and Intangible Assets Disclosure [Text Block] Goodwill and Intangible Assets Related party transactions Related Party Transactions Disclosure [Text Block] Related party transactions Restricted Cash Restricted Assets Disclosure [Text Block] Restricted Cash Quarterly Data (Unaudited) Quarterly Financial Information [Text Block] Quarterly Data (Unaudited) Consolidation, Policy [Policy Text Block] Principles of consolidation Use of Estimates, Policy [Policy Text Block] Use of estimates Revenue Recognition, Policy [Policy Text Block] Revenue recognition Business Combinations Policy [Policy Text Block] Business combinations Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block] Restricted Cash Cost of Sales, Policy [Policy Text Block] Cost of revenue Research and Development Expense, Policy [Policy Text Block] Research and development expenses Selling, General and Administrative Expenses, Policy [Policy Text Block] Selling, general, and administrative expense Earnings Per Share, Policy [Policy Text Block] Net loss per share Cash and Cash Equivalents, Policy [Policy Text Block] Cash and Cash equivalents Disclosure of accounting policy for restricted cash and deposits. Restricted Cash and Deposits [Policy Text Block] Restricted cash and deposits Receivables, Trade and Other Accounts Receivable, Allowance for Doubtful Accounts, Policy [Policy Text Block] Accounts Receivable and allowance for doubtful accounts Inventory, Policy [Policy Text Block] Inventory Property, Plant and Equipment, Policy [Policy Text Block] Property and equipment