XML 56 R46.htm IDEA: XBRL DOCUMENT v3.23.3
Investment Securities - Amortized Cost and Fair Value, by Contractual Maturity (Details) - USD ($)
$ in Thousands
Sep. 30, 2023
Dec. 31, 2022
Amortized Cost    
Due in one year or less $ 19,884  
Due after one year through five years 60,651  
Due after five years through ten years 172,717  
Due after ten years 164,865  
Total contractual maturities 418,117  
Available-for-sale investment securities, amortized cost 3,172,031 $ 3,549,599
Fair Value    
Due in one year or less 19,534  
Due after one year through five years 57,469  
Due after five years through ten years 161,989  
Due after ten years 162,151  
Total contractual maturities 401,143  
Total available-for-sale securities, Fair value, 2,722,704 3,151,133
Amortized Cost    
Due after five years through ten years 10,280  
Due after ten years 96,929  
Total contractual maturities 107,209  
Amortized cost 4,104,114 4,320,639
Fair Value    
Due after five years through ten years 8,732  
Due after ten years 81,149  
Total contractual maturities 89,881  
Total held to maturity, Fair value, 3,433,029 3,814,822
Mortgage-backed securities:    
Amortized Cost    
Mortgaged-backed securities and collateralized mortgage obligations 1,613,490  
Fair Value    
Mortgaged-backed securities and collateralized mortgage obligations 1,354,961  
Amortized Cost    
Mortgaged-backed securities and collateralized mortgage obligations 1,308,835  
Fair Value    
Mortgaged-backed securities and collateralized mortgage obligations 1,079,586  
Residential - Government agency    
Amortized Cost    
Mortgaged-backed securities and collateralized mortgage obligations 61,768  
Available-for-sale investment securities, amortized cost 61,768 66,792
Fair Value    
Mortgaged-backed securities and collateralized mortgage obligations 52,362  
Total available-for-sale securities, Fair value, 52,362 59,723
Amortized Cost    
Mortgaged-backed securities and collateralized mortgage obligations 44,379  
Amortized cost 44,379 46,302
Fair Value    
Mortgaged-backed securities and collateralized mortgage obligations 36,355  
Total held to maturity, Fair value, 36,355 40,008
Residential - Government-sponsored enterprises    
Amortized Cost    
Mortgaged-backed securities and collateralized mortgage obligations 1,185,269  
Available-for-sale investment securities, amortized cost 1,185,269 1,317,718
Fair Value    
Mortgaged-backed securities and collateralized mortgage obligations 1,005,782  
Total available-for-sale securities, Fair value, 1,005,782 1,160,455
Amortized Cost    
Mortgaged-backed securities and collateralized mortgage obligations 100,905  
Amortized cost 100,905 106,534
Fair Value    
Mortgaged-backed securities and collateralized mortgage obligations 82,754  
Total held to maturity, Fair value, 82,754 93,556
Commercial - Government agency    
Amortized Cost    
Mortgaged-backed securities and collateralized mortgage obligations 272,432  
Available-for-sale investment securities, amortized cost 272,432 282,700
Fair Value    
Mortgaged-backed securities and collateralized mortgage obligations 211,897  
Total available-for-sale securities, Fair value, 211,897 237,853
Amortized Cost    
Mortgaged-backed securities and collateralized mortgage obligations 30,733  
Amortized cost 30,733 30,544
Fair Value    
Mortgaged-backed securities and collateralized mortgage obligations 21,977  
Total held to maturity, Fair value, 21,977 25,315
Commercial - Government-sponsored enterprises    
Amortized Cost    
Mortgaged-backed securities and collateralized mortgage obligations 94,021  
Available-for-sale investment securities, amortized cost 94,021 130,612
Fair Value    
Mortgaged-backed securities and collateralized mortgage obligations 84,920  
Total available-for-sale securities, Fair value, 84,920 119,573
Amortized Cost    
Mortgaged-backed securities and collateralized mortgage obligations 1,132,818  
Amortized cost 1,132,818 1,150,449
Fair Value    
Mortgaged-backed securities and collateralized mortgage obligations 938,500  
Total held to maturity, Fair value, 938,500 1,011,998
Collateralized mortgage obligations    
Amortized Cost    
Mortgaged-backed securities and collateralized mortgage obligations 1,140,424  
Fair Value    
Mortgaged-backed securities and collateralized mortgage obligations 966,600  
Amortized Cost    
Mortgaged-backed securities and collateralized mortgage obligations 2,688,070  
Fair Value    
Mortgaged-backed securities and collateralized mortgage obligations 2,263,562  
Government agency    
Amortized Cost    
Mortgaged-backed securities and collateralized mortgage obligations 661,207  
Available-for-sale investment securities, amortized cost 661,207 738,524
Fair Value    
Mortgaged-backed securities and collateralized mortgage obligations 565,852  
Total available-for-sale securities, Fair value, 565,852 653,322
Amortized Cost    
Mortgaged-backed securities and collateralized mortgage obligations 1,010,551  
Amortized cost 1,010,551 1,080,492
Fair Value    
Mortgaged-backed securities and collateralized mortgage obligations 857,291  
Total held to maturity, Fair value, 857,291 958,114
Government-sponsored enterprises    
Amortized Cost    
Mortgaged-backed securities and collateralized mortgage obligations 479,217  
Available-for-sale investment securities, amortized cost 479,217 533,103
Fair Value    
Mortgaged-backed securities and collateralized mortgage obligations 400,748  
Total available-for-sale securities, Fair value, 400,748 462,132
Amortized Cost    
Mortgaged-backed securities and collateralized mortgage obligations 1,677,519  
Amortized cost 1,677,519 1,798,178
Fair Value    
Mortgaged-backed securities and collateralized mortgage obligations 1,406,271  
Total held to maturity, Fair value, $ 1,406,271 $ 1,591,133