Annual report pursuant to Section 13 and 15(d)

Debt and Interest (2018 Venture Notes and Mustang Horizon Notes) (Narrative) (Details)

v3.22.1
Debt and Interest (2018 Venture Notes and Mustang Horizon Notes) (Narrative) (Details) - USD ($)
$ in Thousands
1 Months Ended 12 Months Ended
Sep. 30, 2020
Aug. 31, 2020
Dec. 31, 2021
Dec. 31, 2020
Debt Instrument [Line Items]        
Debt instrument, stated interest rate     11.00%  
Debt Prepayment Penalties     $ 450 $ 0
Total notes payable, gross     60,450 60,000
Debt instrument, interest expense     11,394 9,704
Venture Debt [Member]        
Debt Instrument [Line Items]        
Payment of debt issuance fees       58
Repayments of debt   $ 21,700   21,707
Debt instrument, interest expense     0 1,253
Mustang Horizon Notes [Member]        
Debt Instrument [Line Items]        
Debt Prepayment Penalties $ 600     600
Final payment fee 800      
Repayments of debt 15,000     15,750
Debt instrument, interest expense $ 100   $ 0 $ 1,585