XML 90 R67.htm IDEA: XBRL DOCUMENT v3.25.4
Investment Securities - Summary of Investment Securities (Detail) - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Schedule of Investments [Line Items]    
Total available-for-sale $ 10,466,978 $ 9,720,415
Gross Unrealized Gains 91,542 12,952
Gross Unrealized Losses (549,020) (725,900)
Allowance for Credit Losses 0 (867)
Fair Value [1] 10,009,500 9,006,600
Debt Securities, Available-For-Sale    
Schedule of Investments [Line Items]    
Interest receivable 37,500 35,200
Government agency debentures    
Schedule of Investments [Line Items]    
Total available-for-sale 222,848 222,767
Gross Unrealized Gains 0 0
Gross Unrealized Losses (25,198) (36,341)
Allowance for Credit Losses 0 0
Fair Value 197,650 186,426
Municipal bonds and notes    
Schedule of Investments [Line Items]    
Total available-for-sale 116,750 123,885
Gross Unrealized Gains 0 2
Gross Unrealized Losses (7,131) (13,011)
Allowance for Credit Losses 0 0
Fair Value 109,619 110,876
Agency CMO    
Schedule of Investments [Line Items]    
Total available-for-sale 26,816 32,193
Gross Unrealized Gains 0 0
Gross Unrealized Losses (1,960) (3,150)
Allowance for Credit Losses 0 0
Fair Value 24,856 29,043
Agency MBS    
Schedule of Investments [Line Items]    
Total available-for-sale 5,125,433 4,760,541
Gross Unrealized Gains 80,370 11,654
Gross Unrealized Losses (148,530) (252,410)
Allowance for Credit Losses 0 0
Fair Value 5,057,273 4,519,785
Agency CMBS    
Schedule of Investments [Line Items]    
Total available-for-sale 3,855,392 3,400,021
Gross Unrealized Gains 9,057 84
Gross Unrealized Losses (338,439) (365,713)
Allowance for Credit Losses 0 0
Fair Value 3,526,010 3,034,392
CMBS    
Schedule of Investments [Line Items]    
Total available-for-sale 717,776 630,985
Gross Unrealized Gains 1,531 411
Gross Unrealized Losses (895) (6,008)
Allowance for Credit Losses 0 0
Fair Value 718,412 625,388
Corporate debt    
Schedule of Investments [Line Items]    
Total available-for-sale 350,996 496,087
Gross Unrealized Gains 584 801
Gross Unrealized Losses (23,435) (43,755)
Allowance for Credit Losses 0 (867)
Fair Value 328,145 452,266
Private label MBS    
Schedule of Investments [Line Items]    
Total available-for-sale 41,087 44,081
Gross Unrealized Gains 0 0
Gross Unrealized Losses (3,035) (4,862)
Allowance for Credit Losses 0 0
Fair Value 38,052 39,219
Other    
Schedule of Investments [Line Items]    
Total available-for-sale 9,880 9,855
Gross Unrealized Gains 0 0
Gross Unrealized Losses (397) (650)
Allowance for Credit Losses 0 0
Fair Value $ 9,483 $ 9,205
[1] Investment securities available-for-sale had an amortized cost basis of $10,466,978 at December 31, 2025, and $9,720,415 at December 31, 2024.