Description of the Business and Financial Condition (Details) - USD ($) $ in Thousands |
1 Months Ended | 3 Months Ended | 12 Months Ended | |||
|---|---|---|---|---|---|---|
Feb. 23, 2021 |
Dec. 29, 2020 |
Jan. 31, 2020 |
Mar. 31, 2021 |
Dec. 31, 2021 |
Dec. 31, 2020 |
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| Cumulative net loss | $ (133,932) | $ (119,522) | ||||
| Cash used in operating activities | 12,697 | 7,807 | ||||
| Secured convertible notes | 9,838 | 21,280 | ||||
| Proceeds from issuance of common stock | 46,785 | $ 0 | ||||
| Cumulative Earnings (Deficit) | $ 134,000 | |||||
| 2010 Secured Notes | ||||||
| Repayments of notes payable | $ 3,700 | |||||
| IPO | ||||||
| Sale of stock, shares issued (in shares) | 2,127,660 | |||||
| Proceeds from issuance of common stock | $ 46,800 | |||||
| Security Purchase Agreement | 2020 Secured Notes | ||||||
| Secured convertible notes | $ 17,500 | |||||
| Long-term debt, term (in years) | 5 years | |||||
| Proceeds from debt, net of issuance costs | $ 16,800 | |||||
| Additional rights, principal amount | $ 5,000 | |||||
| Security Purchase Agreement | Second Closing Note | ||||||
| Increase in secured convertible notes | $ 7,500 | |||||
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- Definition Additional Rights, Principal Amount No definition available.
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- Definition Increase in secured convertible notes. No definition available.
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- Definition Amount of cumulative earnings (deficits) for relevant time periods. No definition available.
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- Definition Period between issuance and maturity of long-term debt, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The cash inflow from additional borrowings, net of cash paid to third parties in connection with debt origination. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The cash inflow from the additional capital contribution to the entity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The cash outflow for a borrowing supported by a written promise to pay an obligation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The cumulative amount of the reporting entity's undistributed earnings or deficit. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The number of shares issued or sold by the subsidiary or equity method investee per stock transaction. No definition available.
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- Definition Carrying amount of collateralized debt obligations with maturities initially due after one year or beyond the operating cycle, if longer, excluding the current portion. Obligations include, but not limited to, mortgage loans, chattel loans, and other borrowings secured by assets. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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