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Operating Leases - Balance Sheet Presentation (Details) - USD ($)
$ in Thousands
Mar. 31, 2023
Dec. 31, 2022
Right-of-Use Assets:    
Right-of-use assets $ 425 $ 487
Right-of-use assets, balance sheet line item Other assets Other assets
Operating Lease Liabilities:    
Operating lease liabilities, current $ 156 $ 180
Operating lease liabilities, noncurrent 265 305
Operating lease liabilities $ 421 $ 485
Operating lease liabilities, current, balance sheet line item Accrued liabilities  
Operating lease liabilities, noncurrent, balance sheet line item Other long-term liabilities