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v3.21.1

Long Term Debt - Narrative (Details) $ / shares in Units, $ in Thousands |  |  | 3 Months Ended |
--- | --- | --- | --- | ---
Dec. 10, 2020 USD ($) $ / shares shares | Jun. 30, 2020 USD ($) fiscalQuarters | Mar. 31, 2021 USD ($) | Dec. 31, 2020 USD ($)
Debt Instrument [Line Items] |  |  |  |
Oberland Facility |  |  | $ 35,000 | $ 35,000
Restricted cash |  |  | 6,333 | 6,842
Standby Letters of Credit | Heights Union |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Collateral amount |  |  | 250 |
Restricted Cash |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Collateral amount |  |  | 6,000 | $ 6,000
Debt derivative liability |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Fair value of derivatives |  | $ 2,387 |  |
Oberland Option |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Exercise price of warrants (in USD per share) | $ / shares | $ 14.13 |  |  |
Oberland Option | TPC Investments II LP, A Wholly Owned Subsidiary Of Oberland Capital |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Shares called by warrants (in shares) | shares | 247,699 |  |  |
Oberland Facility |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Term of debt |  | 7 years |  |
Maximum line of credit amount |  | $ 75 |  |
Financing costs |  | $ 642 |  |
Financing costs paid |  |  | $ 642 |
Period for which quarterly interest payments should be made |  | 7 years |  |
Interest rate |  | 7.50% |  |
Interest rate at period end |  |  | 9.50% |
Threshold revenue achievement for payment of additional quarterly royalty |  | $ 70,000 |  |
Additional payment percentage |  | 1.00% |  |
Cash paid for interest |  |  | $ 831 |
Interest capitalized |  |  | $ 520 |
Make-whole payment, minimum required internal rate of return |  | 11.50% |  |
Increase in interest rate |  | 4.00% |  |
Liquidity covenant multiplier |  | 1.1 |  |
Oberland Facility | Each of Third And Fourth Quarter of 2021 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Revenue target |  | $ 8,750 |  |
Oberland Facility | Each Of The First And Second Quarter of 2022 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Revenue target |  | 17,500 |  |
Oberland Facility | Each Quarter After The Second Quarter of 2022 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Revenue target |  | 20,000 |  |
Oberland Facility | Oberland Option |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Value of warrants outstanding |  | $ 3,500 |  |
Moving average of closing stock |  |  | 45 days |
Gross proceeds from warrant exercises | $ 3,500 |  |  |
Oberland Facility | LIBOR |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Additional interest floor rate |  | 2.00% |  |
Tranche One |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Oberland Facility |  | $ 35,000 |  |
Tranche Two |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Contingent additional borrowing capacity |  | $ 15,000 |  |
Number of quarters | fiscalQuarters |  | 2 |  |
Revenue threshold necessary to obtain additional borrowing |  | $ 20,000 |  |
Tranche Three |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Contingent additional borrowing capacity |  | $ 25,000 |  |
Number of quarters | fiscalQuarters |  | 2 |  |
Revenue threshold necessary to obtain additional borrowing |  | $ 28,000 |  |

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