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Leases (Details) - Schedule of supplemental balance sheet information - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Mar. 31, 2023 | Dec. 31, 2022 | Mar. 31, 2022
Schedule of supplemental balance sheet information (Abstract) |  |  |  |
Operating lease right-of-use assets |  | $ 103 | $ 118 |
Current portion of operating lease obligations |  | 85 | 83 |
Operating lease liabilities, net of current portion |  | 18 | 35 |
Total operating lease liabilities |  | 103 | 118 |
Property and equipment, at cost |  | 2,640 | 2,622 |
Accumulated depreciation |  | (2,421) | (2,418) |
Property and equipment, net |  | 219 | 204 |
Current portion of finance lease obligations |  | 73 | 95 |
Finance lease liabilities, net of current portion |  | 41 | 46 |
Total finance lease liabilities |  | $ 114 | $ 141 |
Operating leases |  | 1 year 6 months |  | 1 year 6 months
Finance leases |  | 1 year 4 months 24 days |  | 2 years
Operating leases | [1] | 5.00% |  | 5.00%
Finance leases |  | 2.00% |  | 2.00%
[1] | Upon adoption of the new lease standard, discount rates used for existing leases were established at January 1, 2019

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