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Significant Accounting Policies - Narrative (Details) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2023 USD ($) | Dec. 31, 2024 USD ($) Category Payment | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($)
Significant Accounting Policies Line Items [Line Items] |  |  |  |
Maximum maturity duration for short term investment grouping |  | 12 months |  |
Accounts and notes receivable | $ 123,857 | $ 128,093 | $ 123,857 |
Number of payments missed for insured loans | Payment |  | 2 |  |
Goodwill | 0 | $ 0 | 0 |
Impairment of goodwill | 10,000 | 0 | 9,802 | $ 0
Acquired intangible asset balance | 0 | 0 | 0 |
Depreciation and amortization expense |  | $ 18,000 | 15,000 | $ 15,000
Change in Accounting Principle, Accounting Standards Update, Adopted [true false] |  | true |  |
Change in Accounting Principle, Accounting Standards Update, Adoption Date |  | Dec. 31, 2024 |  |
Change in Accounting Principle, Accounting Standards Update, Immaterial Effect [true false] |  | true |  |
Accounting Standards Update [Extensible Enumeration] |  | us-gaap:AccountingStandardsUpdate202307Member |  |
Minimum |  |  |  |
Significant Accounting Policies Line Items [Line Items] |  |  |  |
Number of payments missed for insured loans | Payment |  | 2 |  |
Useful life |  | 3 years |  |
Maximum |  |  |  |
Significant Accounting Policies Line Items [Line Items] |  |  |  |
Useful life |  | 7 years |  |
Mortgage insurance |  |  |  |
Significant Accounting Policies Line Items [Line Items] |  |  |  |
Number of mortgage insurance product categories | Category |  | 2 |  |
Premium receivable for deferred monthly premiums | 36,000 | $ 38,000 | 36,000 |
Contractual deferred monthly premiums | 81,000 | 83,000 | 81,000 |
homegenius |  |  |  |
Significant Accounting Policies Line Items [Line Items] |  |  |  |
Accounts and notes receivable | $ 5,000 | $ 5,000 | $ 5,000 |

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