Supplementary Balance Sheet Information - Investments Available-for-sale (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Maturity less than 1 year:
Amortized Cost	$ 31,925	$ 33,979
Gross Unrealized Gains	24	31
Gross Unrealized Losses	(2)	(5)
Fair Market Value	31,947	34,005
Maturity 1 to 2 years:
Amortized Cost	8,859	6,263
Gross Unrealized Gains	29	11
Gross Unrealized Losses	(1)	(3)
Fair Market Value	8,887	6,271
Amortized Cost	40,784	40,242
Gross Unrealized Gains	53	42
Gross Unrealized Losses	(3)	(8)
Fair Market Value	40,834	40,276
Certificate of deposit
Maturity less than 1 year:
Amortized Cost	143
Gross Unrealized Gains	0
Gross Unrealized Losses	0
Fair Market Value	143
Corporate debt securities
Maturity less than 1 year:
Amortized Cost	23,699	17,192
Gross Unrealized Gains	18	27
Gross Unrealized Losses	(2)	(1)
Fair Market Value	23,715	17,218
Maturity 1 to 2 years:
Amortized Cost	4,940	6,263
Gross Unrealized Gains	15	11
Gross Unrealized Losses	(1)	(3)
Fair Market Value	4,954	6,271
Commercial paper
Maturity less than 1 year:
Amortized Cost	413	312
Gross Unrealized Gains	0	1
Gross Unrealized Losses	0	0
Fair Market Value	413	313
U.S. government agencies
Maturity less than 1 year:
Amortized Cost	2,872
Gross Unrealized Gains	4
Gross Unrealized Losses	0
Fair Market Value	2,876
U.S. treasury securities
Maturity less than 1 year:
Amortized Cost	4,798	16,475
Gross Unrealized Gains	2	3
Gross Unrealized Losses	0	(4)
Fair Market Value	4,800	$ 16,474
Maturity 1 to 2 years:
Amortized Cost	3,919
Gross Unrealized Gains	14
Gross Unrealized Losses	0
Fair Market Value	$ 3,933

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