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Supplementary Balance Sheet Information - Intangible Assets, Excluding Goodwill (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Finite Lived Intangible Assets [Line Items]
Intangible assets subject to amortization, Net Carrying Value	$ 7,267
Intangible assets, Cost	18,963	$ 18,991
Intangible assets, Accumulated Amortization	(11,579)	(11,080)
Intangible assets, Net Carrying Value	7,384	7,911
Trademarks
Finite Lived Intangible Assets [Line Items]
Intangible assets not subject to amortization, Cost	117	116
Intangible assets not subject to amortization, Net Carrying Value	117	116
Patents
Finite Lived Intangible Assets [Line Items]
Intangible assets subject to amortization, Cost	1,946	1,975
Intangible assets subject to amortization, Accumulated Amortization	(782)	(752)
Intangible assets subject to amortization, Net Carrying Value	1,164	1,223
Purchased Technology
Finite Lived Intangible Assets [Line Items]
Intangible assets subject to amortization, Cost	16,900	16,900
Intangible assets subject to amortization, Accumulated Amortization	(10,797)	(10,328)
Intangible assets subject to amortization, Net Carrying Value	$ 6,103	$ 6,572

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