Amount of increase in additional paid in capital (APIC) resulting from the issuance of warrants. Includes allocation of proceeds of debt securities issued with detachable stock purchase warrants.

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Exercise price per share or per unit of warrants or rights outstanding.

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Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

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Amount of the fee that accompanies borrowing money under the debt instrument.

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Related Party Transactions - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
	Oct. 01, 2019	Dec. 31, 2019
Related Party Transaction [Line Items]
Issuance of warrants to purchase common stock in connection with long term debt		$ 72
Series E Financing \| Series E Preferred Stock
Related Party Transaction [Line Items]
Sale of stock, price per share (in dollars per share)	$ 28.5
Series E Financing \| Series E Preferred Stock \| Maximum
Related Party Transaction [Line Items]
Number of shares sold in transaction (in shares)	131,579
Term Loan Facility \| SVB Loan Agreement
Related Party Transaction [Line Items]
Fee amount	$ 192,000
Term Loan Facility \| Deferral Fee \| SVB Loan Agreement
Related Party Transaction [Line Items]
Fee amount	100
Term Loan Facility \| Maturity Fee \| SVB Loan Agreement
Related Party Transaction [Line Items]
Fee amount	$ 262
SVB Warrant
Related Party Transaction [Line Items]
Number of warrants called	72,394
Exercise price (in dollars per share)	$ 0.01
Warrant term	10 years
Additional Paid-In Capital
Related Party Transaction [Line Items]
Issuance of warrants to purchase common stock in connection with long term debt		$ 72