v3.26.1
Investment Securities - Amortized Cost to Approximate Fair Value (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Available for sale securities:    
Amortized Cost $ 821,681 $ 865,102
Gross Unrealized Gains   66
Gross Unrealized Losses 1,576 110
Securities available for sale 820,105 865,058 [1]
Accrued interest on securities available for sale 5,100 3,800
Held to maturity securities:    
Amortized Cost 1,354,885 1,543,659 [1]
Gross Unrealized Gains 1,778 1,655
Gross Unrealized Losses 3,120 1,760
Fair Value 1,353,543 1,543,554
Accrued interest on securities held to maturity 4,100 5,000
Equity securities:    
FHLB and other equity securities 227,589 227,589
Treasury notes    
Available for sale securities:    
Amortized Cost 30,462 30,635
Gross Unrealized Gains   45
Gross Unrealized Losses 67  
Securities available for sale 30,395 30,680
Federal Agencies    
Available for sale securities:    
Amortized Cost 259,999 259,591
Gross Unrealized Gains   21
Gross Unrealized Losses 1,503 104
Securities available for sale 258,496 259,508
Mortgage-backed - Agency - multi-family    
Available for sale securities:    
Amortized Cost 3,544 3,562
Gross Unrealized Losses 6 6
Securities available for sale 3,538 3,556
Mortgage-backed - Non-Agency - residential - fair value option    
Available for sale securities:    
Amortized Cost 356,050 385,460
Securities available for sale 356,050 385,460
Held to maturity securities:    
Amortized Cost 627,580 699,957
Gross Unrealized Gains 1,778 1,655
Gross Unrealized Losses   127
Fair Value 629,358 701,485
Mortgage-backed - Agency - residential - fair value option    
Available for sale securities:    
Amortized Cost 171,626 185,854
Securities available for sale 171,626 185,854
Mortgage-backed - Non-Agency - multi-family    
Held to maturity securities:    
Amortized Cost 375,441 438,430
Gross Unrealized Losses 2,422 950
Fair Value 373,019 437,480
Mortgage-backed - Non-Agency - healthcare    
Held to maturity securities:    
Amortized Cost 340,267 393,588
Gross Unrealized Losses   4
Fair Value 340,267 393,584
Mortgage-backed - Agency - multi-family    
Held to maturity securities:    
Amortized Cost 11,597 11,684
Gross Unrealized Losses 698 679
Fair Value $ 10,899 $ 11,005
[1] Derived from audited consolidated financial statements