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Cash, Cash Equivalents and Short-Term Investments (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024	Mar. 31, 2024	Dec. 31, 2023
Cash, Cash Equivalents and Short-Term Investments
Cash	$ 32,945	$ 34,003
Cash equivalents:
Money market mutual fund	3,157	134
Total cash and cash equivalents	36,102	34,137	$ 39,294	$ 35,192
Short-term investments:
Total short-term investments	207,929	216,460
Cash, cash equivalents and short-term investments	244,031	250,597
U.S. Treasury notes and bills
Short-term investments:
Total short-term investments	32,261	41,948
Mutual funds
Short-term investments:
Total short-term investments	98,333	97,675
Corporate debt securities
Short-term investments:
Total short-term investments	$ 77,335	$ 76,837