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v3.25.3

Losses and LAE - Reserve for Losses and LAE Rollforward (Details) - USD ($) $ in Thousands | 9 Months Ended
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Sep. 30, 2025 | Sep. 30, 2024
Loss reserve [Roll Forward] |  |  |
Balance at beginning of period |  | $ 354,431 |
Deduct: Paid claims and LAE related to: |  |  |
Balance at end of period |  | 387,650 |
Mortgage Insurance revenues |  |  |
Loss reserve [Roll Forward] |  |  |
Balance at beginning of period |  | 354,431 | $ 364,923
Less: Reinsurance recoverables | [1] | 34,144 | 25,074
Balance at beginning of period, net of reinsurance recoverables |  | 320,287 | 339,849
Add: Losses and LAE incurred in respect of default notices reported and unreported in: |  |  |
Current year | [2] | 159,968 | 151,497
Prior years |  | (114,788) | (153,806)
Total incurred |  | 45,180 | (2,309)
Deduct: Paid claims and LAE related to: |  |  |
Current year | [2] | 666 | 359
Prior years |  | 20,558 | 11,937
Total paid |  | 21,224 | 12,296
Balance at end of period, net of reinsurance recoverables |  | 344,243 | 325,244
Add: Reinsurance recoverables | [1] | 43,407 | 31,710
Balance at end of period |  | $ 387,650 | $ 356,954
[1] | Related to ceded losses recoverable, if any, on reinsurance transactions. See Note 8 for additional information.
[2] | Related to underlying defaulted loans with a most recent default notice dated in the year indicated. For example, if a loan had defaulted in a prior year, but then subsequently cured and later re-defaulted in the current year, that default would be considered a current year default.

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- Definition Liability as of the balance sheet date for amounts representing estimated cost of settling unpaid claims under the terms of the underlying insurance policies, less estimated reinsurance recoveries on such claims. This includes an estimate for claims which have been incurred but not reported. Claim adjustment expenses represent the costs estimated to be incurred in the settlement of unpaid claims. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(13)(a)(1)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (cc) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-3 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-3 + Details
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