XML 52 R39.htm IDEA: XBRL DOCUMENT v3.24.2.u1
Investment Securities - Schedule of AFS and HTM securities (Details) - USD ($)
$ in Thousands
Jun. 30, 2024
Dec. 31, 2023
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost $ 1,584,435 $ 1,668,316
Gross Unrealized Gains 30 45
Gross Unrealized Losses (163,830) (161,956)
Less: allowance for credit losses (17) (17)
Estimated Fair Value 1,420,618 1,506,388
Schedule of Held-to-maturity Securities [Line Items]    
Amortized Cost 984,967 1,017,693
Allowance for credit losses (2,012) (1,956)
Total held-to-maturity securities, net of ACL 982,955 1,015,737
Gross Unrecognized Gains 0 5
Gross Unrecognized Losses (128,692) (116,116)
Estimated Fair Value 856,275 901,582
U.S. treasury bonds    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 49,944 49,894
Gross Unrealized Gains 0 0
Gross Unrealized Losses (1,223) (1,993)
Less: allowance for credit losses 0 0
Estimated Fair Value 48,721 47,901
U. S. agency securities    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 696,652 729,090
Gross Unrealized Gains 0 0
Gross Unrealized Losses (55,685) (57,693)
Less: allowance for credit losses 0 0
Estimated Fair Value 640,967 671,397
Residential mortgage-backed securities    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 773,275 823,992
Gross Unrealized Gains 30 45
Gross Unrealized Losses (101,099) (96,684)
Less: allowance for credit losses 0 0
Estimated Fair Value 672,206 727,353
Schedule of Held-to-maturity Securities [Line Items]    
Amortized Cost 638,039 670,043
Gross Unrecognized Gains 0 0
Gross Unrecognized Losses (89,274) (79,980)
Estimated Fair Value 548,765 590,063
Commercial mortgage-backed securities    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 53,868 54,557
Gross Unrealized Gains 0 0
Gross Unrealized Losses (5,021) (4,993)
Less: allowance for credit losses 0 0
Estimated Fair Value 48,847 49,564
Schedule of Held-to-maturity Securities [Line Items]    
Amortized Cost 89,674 90,227
Gross Unrecognized Gains 0 0
Gross Unrecognized Losses (13,058) (12,867)
Estimated Fair Value 76,616 77,360
Municipal bonds    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 8,696 8,783
Gross Unrealized Gains 0 0
Gross Unrealized Losses (514) (293)
Less: allowance for credit losses 0 0
Estimated Fair Value 8,182 8,490
Schedule of Held-to-maturity Securities [Line Items]    
Amortized Cost 124,895 125,114
Gross Unrecognized Gains 0 5
Gross Unrecognized Losses (11,259) (8,540)
Estimated Fair Value 113,636 116,579
Corporate bonds    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 2,000 2,000
Gross Unrealized Gains 0 0
Gross Unrealized Losses (288) (300)
Less: allowance for credit losses (17) (17)
Estimated Fair Value 1,695 1,683
Schedule of Held-to-maturity Securities [Line Items]    
Amortized Cost 132,359 132,309
Gross Unrecognized Gains 0 0
Gross Unrecognized Losses (15,101) (14,729)
Estimated Fair Value $ 117,258 $ 117,580