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Commitments and Contingencies - Maturities of operating lease liabilities (Details) - USD ($) $ in Thousands | Jun. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Commitments and Contingencies. |  |
2023 | $ 74 |
Total undiscounted lease payments | 74 |
Less: imputed interest | 1 |
Total operating lease liability | 73 |
Operating lease liabilities, current portion | $ 73 | $ 260

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- Definition Amount of lessee's undiscounted obligation for lease payment for operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI https://asc.fasb.org/extlink&oid=128292326&loc=SL77918701-209980 + Details
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