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Details of Certain Financial Statement Components - Changes in the carrying amount of goodwill (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Details of Certain Financial Statement Components    
Balance at the beginning of the year $ 2,658 $ 2,461
Adjustment to goodwill, acquisition price allocation of Conductive Transfers (232)  
Adjustment to goodwill, foreign currency exchange rate changes 65 (26)
Balance at the end of the year $ 2,491 $ 2,435