v3.26.3
Loans and Allowance for Credit Losses (Schedule of Credit Exposure for Loans Based on Original LTV and FICO Score) (Details) - 1-4 single family residential - USD ($)
$ in Thousands
Sep. 30, 2026
Dec. 31, 2025
Financing Receivable, Credit Quality Indicator [Line Items]    
Originated current fiscal year $ 247,894 $ 248,591
Originated, fiscal year before current fiscal year 240,437 199,367
Originated, two years before current fiscal year 136,806 233,556
Originated, three years before current fiscal year 170,011 928,477
Originated, four years before current Fiscal year 855,774 2,567,024
Originated, more than five years before current fiscal year 4,123,468 1,914,944
Total 5,774,390 6,091,959
760 or greater    
Financing Receivable, Credit Quality Indicator [Line Items]    
Originated current fiscal year 199,310 178,910
Originated, fiscal year before current fiscal year 168,803 145,699
Originated, two years before current fiscal year 106,283 167,837
Originated, three years before current fiscal year 120,866 671,820
Originated, four years before current Fiscal year 606,982 2,058,226
Originated, more than five years before current fiscal year 3,172,936 1,395,521
Total 4,375,180 4,618,013
720 - 759    
Financing Receivable, Credit Quality Indicator [Line Items]    
Originated current fiscal year 42,376 54,894
Originated, fiscal year before current fiscal year 46,184 35,812
Originated, two years before current fiscal year 20,400 37,624
Originated, three years before current fiscal year 25,329 144,931
Originated, four years before current Fiscal year 134,425 324,779
Originated, more than five years before current fiscal year 555,873 287,334
Total 824,587 885,374
719 or less or not available    
Financing Receivable, Credit Quality Indicator [Line Items]    
Originated current fiscal year 6,208 14,787
Originated, fiscal year before current fiscal year 25,450 17,856
Originated, two years before current fiscal year 10,123 28,095
Originated, three years before current fiscal year 23,816 111,726
Originated, four years before current Fiscal year 114,367 184,019
Originated, more than five years before current fiscal year 394,659 232,089
Total 574,623 588,572
Less than 61%    
Financing Receivable, Credit Quality Indicator [Line Items]    
Originated current fiscal year 51,533 42,822
Originated, fiscal year before current fiscal year 41,491 25,252
Originated, two years before current fiscal year 15,634 41,263
Originated, three years before current fiscal year 25,959 213,007
Originated, four years before current Fiscal year 198,759 1,035,507
Originated, more than five years before current fiscal year 1,545,186 652,497
Total 1,878,562 2,010,348
61% - 70%    
Financing Receivable, Credit Quality Indicator [Line Items]    
Originated current fiscal year 62,419 43,662
Originated, fiscal year before current fiscal year 40,666 24,753
Originated, two years before current fiscal year 18,453 28,681
Originated, three years before current fiscal year 19,347 241,588
Originated, four years before current Fiscal year 220,861 715,135
Originated, more than five years before current fiscal year 1,077,598 454,229
Total 1,439,344 1,508,048
71% - 80%    
Financing Receivable, Credit Quality Indicator [Line Items]    
Originated current fiscal year 99,328 102,327
Originated, fiscal year before current fiscal year 93,957 116,351
Originated, two years before current fiscal year 77,618 133,730
Originated, three years before current fiscal year 101,656 470,437
Originated, four years before current Fiscal year 432,844 785,474
Originated, more than five years before current fiscal year 1,444,962 775,835
Total 2,250,365 2,384,154
More than 80%    
Financing Receivable, Credit Quality Indicator [Line Items]    
Originated current fiscal year 34,614 59,780
Originated, fiscal year before current fiscal year 64,323 33,011
Originated, two years before current fiscal year 25,101 29,882
Originated, three years before current fiscal year 23,049 3,445
Originated, four years before current Fiscal year 3,310 30,908
Originated, more than five years before current fiscal year 55,722 32,383
Total 206,119 189,409
Current    
Financing Receivable, Credit Quality Indicator [Line Items]    
Originated current fiscal year 242,954 245,592
Originated, fiscal year before current fiscal year 239,139 197,279
Originated, two years before current fiscal year 134,135 232,600
Originated, three years before current fiscal year 164,955 920,112
Originated, four years before current Fiscal year 846,586 2,543,128
Originated, more than five years before current fiscal year 4,081,387 1,883,061
Total 5,709,156 6,021,772
30 - 59 Days Past Due    
Financing Receivable, Credit Quality Indicator [Line Items]    
Originated current fiscal year 4,940 2,445
Originated, fiscal year before current fiscal year 1,140 72
Originated, two years before current fiscal year 527 884
Originated, three years before current fiscal year 2,814 7,390
Originated, four years before current Fiscal year 8,065 17,045
Originated, more than five years before current fiscal year 24,986 20,263
Total 42,472 48,099
60 - 89 Days Past Due    
Financing Receivable, Credit Quality Indicator [Line Items]    
Originated current fiscal year 0 395
Originated, fiscal year before current fiscal year 0 0
Originated, two years before current fiscal year 0 0
Originated, three years before current fiscal year 1,175 0
Originated, four years before current Fiscal year 0 1,471
Originated, more than five years before current fiscal year 4,582 2,602
Total 5,757 4,468
90 Days or More Past Due    
Financing Receivable, Credit Quality Indicator [Line Items]    
Originated current fiscal year 0 159
Originated, fiscal year before current fiscal year 158 2,016
Originated, two years before current fiscal year 2,144 72
Originated, three years before current fiscal year 1,067 975
Originated, four years before current Fiscal year 1,123 5,380
Originated, more than five years before current fiscal year 12,513 9,018
Total $ 17,005 $ 17,620