v3.26.1
Investment Securities - Schedule of Securities Available for Sale (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Debt Securities, Available-for-sale [Line Items]    
Amortized cost $ 4,696,251 $ 2,646,414
Allowance for credit loss (3,250) (775)
Net carrying amount 4,693,001 2,645,639
Gross unrealized gains 3,084 5,309
Gross unrealized losses (212,064) (196,890)
Fair value 4,484,021 2,454,058
Interest receivable 19,400 11,400
Agency residential MBS    
Debt Securities, Available-for-sale [Line Items]    
Amortized cost 928,717 972,161
Allowance for credit loss 0 0
Net carrying amount 928,717 972,161
Gross unrealized gains 0 0
Gross unrealized losses (140,077) (138,076)
Fair value 788,640 834,085
U.S. Treasury securities    
Debt Securities, Available-for-sale [Line Items]    
Amortized cost 223,509  
Allowance for credit loss 0  
Net carrying amount 223,509  
Gross unrealized gains 65  
Gross unrealized losses (99)  
Fair value 223,475  
Agency commercial MBS    
Debt Securities, Available-for-sale [Line Items]    
Amortized cost 151,059 52,022
Allowance for credit loss 0 0
Net carrying amount 151,059 52,022
Gross unrealized gains 0 44
Gross unrealized losses (1,487) (1,100)
Fair value 149,572 50,966
Agency residential CMOs    
Debt Securities, Available-for-sale [Line Items]    
Amortized cost 2,625,289 883,067
Allowance for credit loss 0 0
Net carrying amount 2,625,289 883,067
Gross unrealized gains 1,891 3,857
Gross unrealized losses (27,968) (15,300)
Fair value 2,599,212 871,624
Corporate debt securities    
Debt Securities, Available-for-sale [Line Items]    
Amortized cost 254,753 257,236
Allowance for credit loss (3,250) (775)
Net carrying amount 251,503 256,461
Gross unrealized gains 802 576
Gross unrealized losses (14,441) (15,441)
Fair value 237,864 241,596
Private label residential CMOs    
Debt Securities, Available-for-sale [Line Items]    
Amortized cost 289,337 254,787
Allowance for credit loss 0 0
Net carrying amount 289,337 254,787
Gross unrealized gains 46 522
Gross unrealized losses (27,355) (26,334)
Fair value 262,028 228,975
Collateralized loan obligations    
Debt Securities, Available-for-sale [Line Items]    
Amortized cost 200,307 200,519
Allowance for credit loss 0 0
Net carrying amount 200,307 200,519
Gross unrealized gains 213 303
Gross unrealized losses (20) 0
Fair value 200,500 200,822
Private label commercial MBS    
Debt Securities, Available-for-sale [Line Items]    
Amortized cost 7,946 9,746
Allowance for credit loss 0 0
Net carrying amount 7,946 9,746
Gross unrealized gains 0 0
Gross unrealized losses (435) (467)
Fair value 7,511 9,279
Asset-backed securities    
Debt Securities, Available-for-sale [Line Items]    
Amortized cost 12,114 13,242
Allowance for credit loss 0 0
Net carrying amount 12,114 13,242
Gross unrealized gains 67 7
Gross unrealized losses 0 0
Fair value 12,181 13,249
SBA securities    
Debt Securities, Available-for-sale [Line Items]    
Amortized cost 3,220 3,634
Allowance for credit loss 0 0
Net carrying amount 3,220 3,634
Gross unrealized gains 0 0
Gross unrealized losses (182) (172)
Fair value $ 3,038 $ 3,462