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Investment Securities - Schedule of Amortized Cost and Estimated Fair Value of Securities Available-for-Sale (Details) - USD ($)
$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Debt Securities, Available-for-sale [Line Items]    
Total investment securities available-for-sale $ 1,668,316  
Gross Unrealized Gains 45 $ 63
Gross Unrealized Losses (161,956) (205,278)
Allowance for Credit Losses (17) (17)
Schedule of Held-to-Maturity Securities [Line Items]    
HTM, amortized cost 1,017,693 1,094,140
Less: allowance for credit losses (1,956) (766)
Total investment securities held-to-maturity 1,015,737 1,093,374
Gross Unrecognized Gains 5 0
Gross Unrecognized Losses (116,116) (125,433)
Total investment securities held-to-maturity 901,582 968,707
U.S. treasury bonds    
Debt Securities, Available-for-sale [Line Items]    
Total investment securities available-for-sale 49,894 49,793
Gross Unrealized Gains 0 0
Gross Unrealized Losses (1,993) (3,466)
Allowance for Credit Losses 0 0
Estimated Fair Value 47,901 46,327
U.S. agency securities    
Debt Securities, Available-for-sale [Line Items]    
Total investment securities available-for-sale 729,090 747,777
Gross Unrealized Gains 0 0
Gross Unrealized Losses (57,693) (78,049)
Allowance for Credit Losses 0 0
Estimated Fair Value 671,397 669,728
Residential mortgage-backed securities    
Debt Securities, Available-for-sale [Line Items]    
Total investment securities available-for-sale 823,992 937,557
Gross Unrealized Gains 45 18
Gross Unrealized Losses (96,684) (117,072)
Allowance for Credit Losses 0 0
Estimated Fair Value 727,353 820,503
Schedule of Held-to-Maturity Securities [Line Items]    
HTM, amortized cost 670,043 741,057
Gross Unrecognized Gains 0 0
Gross Unrecognized Losses (79,980) (88,390)
Total investment securities held-to-maturity 590,063 652,667
Commercial mortgage-backed securities    
Debt Securities, Available-for-sale [Line Items]    
Total investment securities available-for-sale 54,557 56,071
Gross Unrealized Gains 0 0
Gross Unrealized Losses (4,993) (5,858)
Allowance for Credit Losses 0 0
Estimated Fair Value 49,564 50,213
Schedule of Held-to-Maturity Securities [Line Items]    
HTM, amortized cost 90,227 92,557
Gross Unrecognized Gains 0 0
Gross Unrecognized Losses (12,867) (11,993)
Total investment securities held-to-maturity 77,360 80,564
Municipal bonds    
Debt Securities, Available-for-sale [Line Items]    
Total investment securities available-for-sale 8,783 10,700
Gross Unrealized Gains 0 45
Gross Unrealized Losses (293) (658)
Allowance for Credit Losses 0 0
Estimated Fair Value 8,490 10,087
Schedule of Held-to-Maturity Securities [Line Items]    
HTM, amortized cost 125,114 128,273
Gross Unrecognized Gains 5 0
Gross Unrecognized Losses (8,540) (12,092)
Total investment securities held-to-maturity 116,579 116,181
Corporate bonds    
Debt Securities, Available-for-sale [Line Items]    
Total investment securities available-for-sale 2,000 2,000
Gross Unrealized Gains 0 0
Gross Unrealized Losses (300) (175)
Allowance for Credit Losses (17) (17)
Estimated Fair Value 1,683 1,808
Schedule of Held-to-Maturity Securities [Line Items]    
HTM, amortized cost 132,309 132,253
Gross Unrecognized Gains 0 0
Gross Unrecognized Losses (14,729) (12,958)
Total investment securities held-to-maturity 117,580 119,295
Other Security Investments    
Debt Securities, Available-for-sale [Line Items]    
Total investment securities available-for-sale 1,668,316 1,803,898
Estimated Fair Value $ 1,506,388 $ 1,598,666