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Details of Significant Accounts - Leasing arrangements - Additional Information (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Details of Significant Accounts      
Cash outflow for leases $ 802 $ 848 $ 793
Interest expense on lease liabilities 15 8 9
Expense on short-term lease contracts 352 383 391
Repayments of principal portion of lease liabilities $ 435 $ 457 $ 393