v3.26.1
Investment Securities - Schedule of Investment Securities (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Schedule of Investments [Line Items]    
Total available-for-sale $ 11,175,942 $ 10,466,978
Gross Unrealized Gains 55,077 91,542
Gross Unrealized Losses (630,691) (549,020)
Fair Value [1] 10,600,328 10,009,500
Debt Securities, Available-For-Sale    
Schedule of Investments [Line Items]    
Interest receivable 39,300 37,500
Government agency debentures    
Schedule of Investments [Line Items]    
Total available-for-sale 222,888 222,848
Gross Unrealized Gains 0 0
Gross Unrealized Losses (27,717) (25,198)
Fair Value 195,171 197,650
Agency CMO    
Schedule of Investments [Line Items]    
Total available-for-sale 24,649 26,816
Gross Unrealized Gains 0 0
Gross Unrealized Losses (2,157) (1,960)
Fair Value 22,492 24,856
Agency MBS    
Schedule of Investments [Line Items]    
Total available-for-sale 5,431,524 5,125,433
Gross Unrealized Gains 47,686 80,370
Gross Unrealized Losses (166,829) (148,530)
Fair Value 5,312,381 5,057,273
Agency CMBS    
Schedule of Investments [Line Items]    
Total available-for-sale 4,136,207 3,855,392
Gross Unrealized Gains 4,378 9,057
Gross Unrealized Losses (398,389) (338,439)
Fair Value 3,742,196 3,526,010
Municipal bonds and notes    
Schedule of Investments [Line Items]    
Total available-for-sale 115,969 116,750
Gross Unrealized Gains 0 0
Gross Unrealized Losses (6,740) (7,131)
Fair Value 109,229 109,619
CMBS    
Schedule of Investments [Line Items]    
Total available-for-sale 879,080 717,776
Gross Unrealized Gains 2,520 1,531
Gross Unrealized Losses (1,047) (895)
Fair Value 880,553 718,412
Corporate debt    
Schedule of Investments [Line Items]    
Total available-for-sale 316,113 350,996
Gross Unrealized Gains 493 584
Gross Unrealized Losses (23,668) (23,435)
Fair Value 292,938 328,145
Private label MBS    
Schedule of Investments [Line Items]    
Total available-for-sale 39,619 41,087
Gross Unrealized Gains 0 0
Gross Unrealized Losses (3,680) (3,035)
Fair Value 35,939 38,052
Other    
Schedule of Investments [Line Items]    
Total available-for-sale 9,893 9,880
Gross Unrealized Gains 0 0
Gross Unrealized Losses (464) (397)
Fair Value $ 9,429 $ 9,483
[1] Investment securities available-for-sale had an amortized cost basis of $11,175,942 at June 30, 2026, and $10,466,978 at December 31, 2025.