Supplementary Balance Sheet Information - Investments Available-for-sale (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Maturity less than 1 year:
Amortized Cost	$ 33,979	$ 26,293
Gross Unrealized Gains	31	33
Gross Unrealized Losses	(5)	(17)
Fair Market Value	34,005	26,309
Maturity 1 to 2 years:
Amortized Cost	6,263	26,942
Gross Unrealized Gains	11	6
Gross Unrealized Losses	(3)	(89)
Fair Market Value	6,271	26,859
Amortized Cost	40,242	53,235
Gross Unrealized Gains	42	39
Gross Unrealized Losses	(8)	(106)
Fair Market Value	40,276	53,168
Certificate of deposit
Maturity less than 1 year:
Amortized Cost		8,317
Gross Unrealized Gains		16
Gross Unrealized Losses		0
Fair Market Value		8,333
Corporate debt securities
Maturity less than 1 year:
Amortized Cost	17,192	10,948
Gross Unrealized Gains	27	8
Gross Unrealized Losses	(1)	(16)
Fair Market Value	17,218	10,940
Maturity 1 to 2 years:
Amortized Cost	6,263	8,437
Gross Unrealized Gains	11	6
Gross Unrealized Losses	(3)	(10)
Fair Market Value	6,271	8,433
Commercial paper
Maturity less than 1 year:
Amortized Cost	312	6,193
Gross Unrealized Gains	1	9
Gross Unrealized Losses	0	0
Fair Market Value	313	6,202
U.S. government agencies
Maturity less than 1 year:
Amortized Cost		835
Gross Unrealized Gains		0
Gross Unrealized Losses		(1)
Fair Market Value		834
U.S. treasury securities
Maturity less than 1 year:
Amortized Cost	16,475
Gross Unrealized Gains	3
Gross Unrealized Losses	(4)
Fair Market Value	$ 16,474
Maturity 1 to 2 years:
Amortized Cost		18,505
Gross Unrealized Gains		0
Gross Unrealized Losses		(79)
Fair Market Value		$ 18,426

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