Details of Certain Financial Statement Components - Changes in the carrying amount of goodwill (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Details of Certain Financial Statement Components
Balance at the beginning of the year	$ 2,586	$ 2,658
Adjustment to goodwill, acquisition price allocation of Conductive Transfers		(232)
Adjustment to goodwill, foreign currency exchange rate changes	(47)	65
Balance at the end of the year	$ 2,539	$ 2,491