Leases (Schedule of Other Information) (Details) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2021 |
Dec. 31, 2020 |
|
| Leases [Abstract] | ||
| Operating cash flows from operating leases | $ (187) | $ 1,068 |
| Financing cash flows from finance leases | 1,088 | 103 |
| Right-of-use assets obtained in exchange for new finance lease liabilities | 263 | 12,706 |
| Finance lease right-of-use assets | 12,318 | 12,677 |
| Operating lease right-of-use assets | 113 | 50 |
| Finance lease liability, current | 1,133 | 1,027 |
| Finance lease liability, non-current | 11,647 | 11,783 |
| Operating lease liabilities, current | 60 | $ 51 |
| Operating lease liabilities, non-current | $ 54 | |
| Weighted average remaining lease terms - finance leases | 20 years 6 months 29 days | 20 years 8 months 1 day |
| Weighted average remaining lease terms - operating leases | 1 year 9 months 29 days | 10 months 2 days |
| Weighted average discount rate - finance leases | 6.42% | 6.43% |
| Weighted average discount rate - operating leases | 7.75% | 7.75% |