Supplementary Balance Sheet Information - Investments Available-for-sale (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Maturity less than 1 year:
Amortized Cost	$ 43,057	$ 33,979
Gross Unrealized Gains	24	31
Gross Unrealized Losses	(3)	(5)
Fair Market Value	43,078	34,005
Maturity 1 to 2 years:
Amortized Cost	12,708	6,263
Gross Unrealized Gains	9	11
Gross Unrealized Losses	(3)	(3)
Fair Market Value	12,714	6,271
Amortized Cost	55,765	40,242
Gross Unrealized Gains	33	42
Gross Unrealized Losses	(6)	(8)
Fair Market Value	55,792	40,276
Corporate debt securities
Maturity less than 1 year:
Amortized Cost	22,507	17,192
Gross Unrealized Gains	23	27
Gross Unrealized Losses	(2)	(1)
Fair Market Value	22,528	17,218
Maturity 1 to 2 years:
Amortized Cost	10,709	6,263
Gross Unrealized Gains	8	11
Gross Unrealized Losses	(3)	(3)
Fair Market Value	10,714	6,271
Commercial paper
Maturity less than 1 year:
Amortized Cost	316	312
Gross Unrealized Gains	0	1
Gross Unrealized Losses	0	0
Fair Market Value	316	313
U.S. government agencies
Maturity 1 to 2 years:
Amortized Cost	1,999
Gross Unrealized Gains	1
Gross Unrealized Losses	0
Fair Market Value	2,000
U.S. treasury securities
Maturity less than 1 year:
Amortized Cost	20,234	16,475
Gross Unrealized Gains	1	3
Gross Unrealized Losses	(1)	(4)
Fair Market Value	$ 20,234	$ 16,474

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