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Financial Instruments and Fair Value - Schedule of Cash, Cash Equivalents, and Marketable Securities by Significant Investment Category (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024	Sep. 30, 2024	Dec. 31, 2023
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Amortized Cost	$ 261,103	$ 270,050
Unrealized Gains	35	54
Fair Value	261,138	270,104
Cash and Cash Equivalents	454,640	515,627	$ 363,422	$ 412,618
Marketable Securities	73,442	47,896
Cash
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents	238,795	256,638
Marketable Securities	0	0
Fair Value, Inputs, Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Amortized Cost	261,103	270,050
Unrealized Gains	35	54
Fair Value	261,138	270,104
Cash and Cash Equivalents	215,845	258,989
Marketable Securities	73,442	47,896
Fair Value, Inputs, Level 1 \| Money market funds
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents	28,149	36,781
Marketable Securities	0	0
Fair Value, Inputs, Level 1 \| U.S. Treasury securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Amortized Cost	261,103	270,050
Unrealized Gains	35	54
Fair Value	261,138	270,104
Cash and Cash Equivalents	187,696	222,208
Marketable Securities	$ 73,442	$ 47,896