Commitments and Contingencies (Cash Flows) (Details) - USD ($) $ in Thousands  | 
3 Months Ended | |
|---|---|---|
Mar. 31, 2023  | 
Mar. 31, 2022  | 
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| Commitments and Contingencies | ||
| Operating cash flows from operating leases | $ 132 | $ 128 | 
| Weighted-average remaining lease term - operating leases | 6 years 3 months 18 days | 5 years 7 months 4 days | 
| Weighted-average discount rate - operating leases | 9.10% | 9.00% | 
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- References No definition available. 
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- Definition Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- Definition Weighted average discount rate for operating lease calculated at point in time. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- Definition Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/exampleRef 
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