Composition of Certain Financial Statement Captions - Narrative (Details) - USD ($) |
3 Months Ended | 9 Months Ended | |||
|---|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
Dec. 31, 2025 |
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| Items Included in Consolidated Statement of Financial Condition [Abstract] | |||||
| Depreciation | $ 7,119,000 | $ 7,485,000 | $ 21,446,000 | $ 23,077,000 | |
| Deferred contract costs | $ 58,954,000 | 58,954,000 | $ 53,345,000 | ||
| Capitalized contract cost, amount capitalized during period | 17,909,000 | 13,528,000 | |||
| Amortization of deferred contract costs | 12,300,000 | $ 9,875,000 | |||
| Capitalized contract cost impairment | $ 0 | ||||
| X | ||||||||||
- Definition Capitalized Contract Cost, Amount Capitalized During Period No definition available.
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount of amortization expense for asset recognized from cost incurred to obtain or fulfill contract with customer. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of impairment loss for asset recognized from cost incurred to obtain or fulfill contract with customer. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount, after accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition The expense recognized in the current period that allocates the cost of nonproduction tangible assets over their useful lives. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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