Long Term Debt - Carrying Value of Outstanding Debt (Details) - USD ($) $ in Thousands  | 
Mar. 31, 2021  | 
Dec. 31, 2020  | 
|---|---|---|
| Debt Disclosure [Abstract] | ||
| Oberland Facility | $ 35,000 | $ 35,000 | 
| Less - unamortized debt discount and deferred financing fees | (2,860) | (2,973) | 
| Total long-term debt | $ 32,140 | $ 32,027 | 
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- References No definition available. 
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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- Definition Amount of unamortized debt discount (premium) and debt issuance costs. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- Definition Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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