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Fair Value of Financial Instruments - Rollforward of Balance Sheet Amounts Within Level 3 Valuation Hierarchy (Details) - USD ($) | 3 Months Ended
--- | ---
Mar. 31, 2025 | Mar. 31, 2024
Assets measured on recurring basis, unobservable input reconciliation, calculation [Roll Forward] |  |
Transfers out of Level 3 | $ 0 |
Available-for-sale Securities |  |
Assets measured on recurring basis, unobservable input reconciliation, calculation [Roll Forward] |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 |  | $ 1
Recurring | Other investments |  |
Assets measured on recurring basis, unobservable input reconciliation, calculation [Roll Forward] |  |
Fair value, beginning of period | 176,551,000 | 157,140,000
Total realized gains (losses) included in income | 183,000 | (714,000)
Changes in unrealized gains/losses included in other comprehensive income (loss) | 0 | 0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 | 0 | 0
Purchases | 16,920,000 | 7,467,000
Issuances | 0 | 0
Settlements | (1,709,000) | (1,658,000)
Transfers out of Level 3 |  | 0
Fair value, end of period | 191,945,000 | 162,235,000
Total net realized gains (losses) included in income | 183,000 | (714,000)
Recurring | Available-for-sale Securities |  |
Assets measured on recurring basis, unobservable input reconciliation, calculation [Roll Forward] |  |
Fair value, beginning of period | 13,224,000 | 479,000
Total realized gains (losses) included in income | 13,000 | 13,000
Changes in unrealized gains/losses included in other comprehensive income (loss) | 2,000 | 16,000
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 | 0 | 12,841,000
Purchases | 0 | 0
Issuances | 0 | 0
Settlements | (166,000) | (165,000)
Transfers out of Level 3 | 0 | 0
Fair value, end of period | 13,073,000 | 13,184,000
Total net realized gains (losses) included in income | 13,000 | 13,000
Recurring | Servicing Contracts |  |
Assets measured on recurring basis, unobservable input reconciliation, calculation [Roll Forward] |  |
Fair value, beginning of period | 11,854,000 | 0
Total realized gains (losses) included in income | (639,000) | 11,812,000
Changes in unrealized gains/losses included in other comprehensive income (loss) | 0 | 0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 | 0 | 0
Purchases | 0 | 0
Issuances | 0 | 0
Settlements | 0 | 0
Transfers out of Level 3 | 0 | 0
Fair value, end of period | 11,215,000 | 11,812,000
Total net realized gains (losses) included in income | $ (639,000) | $ 11,812,000

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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Definition Amount of gain (loss) recognized in income from asset measured at fair value on recurring basis using unobservable input (level 3). + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 101 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-101 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-3 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 102 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-102 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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- Definition Amount of settlement of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 101 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-101 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-3 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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