Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt, Net of Financing Fees - Carrying Value of Outstanding Debt (Details)

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Long-Term Debt, Net of Financing Fees - Carrying Value of Outstanding Debt (Details) - USD ($)
$ in Thousands
Sep. 30, 2021
Jun. 30, 2021
Dec. 31, 2020
Jun. 30, 2020
Debt Instrument [Line Items]        
Less - unamortized debt discount and deferred financing fees $ (3,762)   $ (2,973)  
Long-Term Debt, Net of Financing Fees 46,238   32,027  
First Tranche        
Debt Instrument [Line Items]        
Oberland Facility 35,000   35,000 $ 35,000
Second Tranche        
Debt Instrument [Line Items]        
Oberland Facility $ 15,000 $ 15,000 $ 0