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Schedule II - Financial Information of Registrant - Parent Company Only Supplemental Notes (Details) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 USD ($) financialGuarantyStructuredTransaction | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($)
Condensed Financial Statements, Captions [Line Items] |  |  |
Net deferred tax liability | $ 391,083 | $ 337,509 |
Allocated operating expenses | 163,000 | 147,386 | $ 129,870
Allocated interest expense | 82,568 | 82,833 | 68,938
Distributions from Radian Guaranty | 882,000 |  |
Increase in other assets | (65,744) | (65,071) | (114,769)
Increase in other liabilities | (40,499) | (2,914) | (54,980)
Mortgage financing facilities |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |
Mortgage financing facilities outstanding | 2,136 | 0 |
Radian Mortgage Assurance |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |
Statutory accounting practices, statutory capital and surplus required | 5,000 |  |
Statutory policyholders' surplus | 8,800 |  |
RIF | 0 |  |
Radian Guaranty |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |
Statutory policyholders' surplus | 758,467 | 1,105,266 | 842,188
Distributions from Radian Guaranty | $ 881,979 | 0 | 0
Radian Guaranty | Indirect Guarantee of Indebtedness |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |
Number of guaranteed structured transactions for Radian Guaranty | financialGuarantyStructuredTransaction | 2 |  |
Guarantor obligations, aggregate remaining credit exposure | $ 58,400 |  |
Parent Company |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |
Net deferred tax liability | 196,829 | 283,585 |
Total allocated expenses | 245,568 | 230,219 | $ 198,808
Investments in and advances to affiliates, at fair value, period increase (decrease) | 82,000 | $ 48,500 |
Increase in other assets | 66,500 |  |
Increase in other liabilities | $ 60,300 |  |

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