v3.25.2
Mortgage Loans Mortgage Loans (Credit Quality Indicator for Conventional Mortgage Loans) (Details) - USD ($)
$ in Thousands
Jun. 30, 2025
Dec. 31, 2024
Mortgage Loans [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Total before allowance for credit losses on mortgage loans [1] $ 9,184,577 $ 8,953,466
In process of foreclosure, included above [2] 6,281 3,429
Past due 90 days or more and still accruing interest 3,338 6,509
Loans on non-accrual status 25,666 [3] 24,402 [4]
Conventional Mortgage Loan [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Originated, More than Five Years before Current Year [1] 3,650,546 2,474,650
Originated, Four Years before Current Year [1] 1,528,270 1,381,056
Originated, Three Years before Current Year [1] 747,910 1,594,885
Originated, Two Years before Current Year [1] 982,048 781,802
Originated, Fiscal Year before Current Year [1] 1,339,329 1,040,048
Originated, Current Year [1] 612,588 1,352,876
Total before allowance for credit losses on mortgage loans [1] 8,860,691 8,625,317
In process of foreclosure, included above [2] 5,863 3,124
Past due 90 days or more and still accruing interest 0 0
Loans on non-accrual status 25,666 [3] 24,402 [4]
Financing Receivable, Nonaccrual, No Allowance 15,557 11,301
Government Loans [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Total before allowance for credit losses on mortgage loans [1] 323,886 328,149
In process of foreclosure, included above [2] 418 305
Past due 90 days or more and still accruing interest 3,338 6,509
Loans on non-accrual status 0 [3] 0 [4]
Financial Asset, 30 to 59 Days Past Due [Member] | Mortgage Loans [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Total before allowance for credit losses on mortgage loans [1] 64,142 72,976
Financial Asset, 30 to 59 Days Past Due [Member] | Conventional Mortgage Loan [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Originated, More than Five Years before Current Year [1] 29,196 30,714
Originated, Four Years before Current Year [1] 11,252 5,594
Originated, Three Years before Current Year [1] 6,157 8,215
Originated, Two Years before Current Year [1] 5,314 7,165
Originated, Fiscal Year before Current Year [1] 2,770 7,532
Originated, Current Year [1] 1,412 4,087
Total before allowance for credit losses on mortgage loans [1] 56,101 63,307
Financial Asset, 30 to 59 Days Past Due [Member] | Government Loans [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Total before allowance for credit losses on mortgage loans [1] 8,041 9,669
Financial Asset, 60 to 89 Days Past Due [Member] | Mortgage Loans [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Total before allowance for credit losses on mortgage loans [1] 23,900 18,688
Financial Asset, 60 to 89 Days Past Due [Member] | Conventional Mortgage Loan [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Originated, More than Five Years before Current Year [1] 11,028 8,402
Originated, Four Years before Current Year [1] 2,567 1,290
Originated, Three Years before Current Year [1] 3,404 1,680
Originated, Two Years before Current Year [1] 1,857 2,017
Originated, Fiscal Year before Current Year [1] 1,036 1,514
Originated, Current Year [1] 0 213
Total before allowance for credit losses on mortgage loans [1] 19,892 15,116
Financial Asset, 60 to 89 Days Past Due [Member] | Government Loans [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Total before allowance for credit losses on mortgage loans [1] 4,008 3,572
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Mortgage Loans [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Total before allowance for credit losses on mortgage loans [1] $ 17,875 $ 25,816
Serious delinquency rate [5] 0.20% 0.30%
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Conventional Mortgage Loan [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Originated, More than Five Years before Current Year [1] $ 8,472 $ 10,006
Originated, Four Years before Current Year [1] 1,572 1,414
Originated, Three Years before Current Year [1] 2,227 1,738
Originated, Two Years before Current Year [1] 1,841 1,846
Originated, Fiscal Year before Current Year [1] 425 3,922
Originated, Current Year [1] 0 381
Total before allowance for credit losses on mortgage loans [1] $ 14,537 $ 19,307
Serious delinquency rate [5] 0.20% 0.20%
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Government Loans [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Total before allowance for credit losses on mortgage loans [1] $ 3,338 $ 6,509
Serious delinquency rate [5] 1.10% 2.00%
FinancialAssetPastDue [Member] | Mortgage Loans [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Total before allowance for credit losses on mortgage loans [1] $ 105,917 $ 117,480
FinancialAssetPastDue [Member] | Conventional Mortgage Loan [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Originated, More than Five Years before Current Year [1] 48,696 49,122
Originated, Four Years before Current Year [1] 15,391 8,298
Originated, Three Years before Current Year [1] 11,788 11,633
Originated, Two Years before Current Year [1] 9,012 11,028
Originated, Fiscal Year before Current Year [1] 4,231 12,968
Originated, Current Year [1] 1,412 4,681
Total before allowance for credit losses on mortgage loans [1] 90,530 97,730
FinancialAssetPastDue [Member] | Government Loans [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Total before allowance for credit losses on mortgage loans [1] 15,387 19,750
Financial Asset, Not Past Due [Member] | Mortgage Loans [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Total before allowance for credit losses on mortgage loans [1] 9,078,660 8,835,986
Financial Asset, Not Past Due [Member] | Conventional Mortgage Loan [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Originated, More than Five Years before Current Year [1] 3,601,850 2,425,528
Originated, Four Years before Current Year [1] 1,512,879 1,372,758
Originated, Three Years before Current Year [1] 736,122 1,583,252
Originated, Two Years before Current Year [1] 973,036 770,774
Originated, Fiscal Year before Current Year [1] 1,335,098 1,027,080
Originated, Current Year [1] 611,176 1,348,195
Total before allowance for credit losses on mortgage loans [1] 8,770,161 8,527,587
Financial Asset, Not Past Due [Member] | Government Loans [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Total before allowance for credit losses on mortgage loans [1] $ 308,499 $ 308,399
[1] Excludes accrued interest receivable.
[2] Includes loans where the decision of foreclosure or similar alternative such as pursuit of deed-in-lieu has been reported. Loans in process of foreclosure are included in past due or current loans depending on their delinquency status.
[3] Includes $15,557,000 of conventional mortgage loans on nonaccrual status that did not have an associated allowance for credit losses because these loans were either previously charged off to the expected recoverable value or the fair value of the underlying collateral was greater than the amortized cost of the loans.
[4] Includes $11,301,000 of conventional mortgage loans on nonaccrual status that did not have an associated allowance for credit losses because these loans were either previously charged off to the expected recoverable value or the fair value of the underlying collateral was greater than the amortized cost of the loans.
[5] Loans that are 90 days or more past due or in the process of foreclosure expressed as a percentage of the total amortized cost for the portfolio class.