| Debt and Interest (Schedule of Debt) (Details) - USD ($) $ in Thousands | 12 Months Ended | ||
|---|---|---|---|
| Dec. 31, 2021 | Dec. 31, 2020 | Aug. 27, 2020 | |
| Debt Instrument [Line Items] | |||
| Total notes payable, gross | $ 60,450 | $ 60,000 | |
| Less: Discount of notes payable | (7,063) | (8,323) | |
| Repayment of Oaktree Note | (10,450) | 0 | |
| Total notes payable | $ 42,937 | 51,677 | |
| Interest rate | 11.00% | ||
| Maturity Date, description | August - 2025 | ||
| 2017 Subordinated Note Financing [Member] | |||
| Debt Instrument [Line Items] | |||
| Less: Discount of notes payable | $ (1,200) | (1,200) | |
| Venture Debt [Member] | |||
| Debt Instrument [Line Items] | |||
| Less: Discount of notes payable | (300) | (300) | |
| Mustang Horizon Notes [Member] | |||
| Debt Instrument [Line Items] | |||
| Less: Discount of notes payable | $ (1,800) | $ (1,800) | |
| Oaktree Note [Member] | |||
| Debt Instrument [Line Items] | |||
| Interest rate | 11.00% | 
| X | ||||||||||
| 
- Definition Decrease in Note payable due to repayment. No definition available. 
 | 
| X | ||||||||||
| 
- 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 
 | 
| X | ||||||||||
| 
- Definition Contractual interest rate for funds borrowed, under the debt agreement. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
 | 
| X | ||||||||||
| 
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available. 
 | 
| X | ||||||||||
| 
- Definition Description of the maturity date of the debt instrument including whether the debt matures serially and, if so, a brief description of the serial maturities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
 | 
| X | ||||||||||
| 
- Definition Amount, after accumulated amortization, of debt discount. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
 | 
| X | ||||||||||
| 
- 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 
 | 
| X | ||||||||||
| 
- Details 
 | 
| X | ||||||||||
| 
- Details 
 | 
| X | ||||||||||
| 
- Details 
 | 
| X | ||||||||||
| 
- Details 
 |