XML 69 R59.htm IDEA: XBRL DOCUMENT v3.23.3
INVESTMENT SECURITIES (Investment Securities by Contractual Maturity - HTM) (Details) - USD ($)
$ in Thousands
Sep. 30, 2023
Dec. 31, 2022
Schedule of Held-to-maturity Securities [Line Items]    
Amortized Cost $ 519,145 $ 535,070
Gross Unrealized Gains 0 0
Gross Unrealized Losses 77,386 65,884
Debt Securities, Held-to-Maturity, Fair Value $ 441,759 $ 469,186
Weighted Average Yield 2.34% 2.30%
Due less than 1 year | Investment securities | US Treasury securities    
Schedule of Held-to-maturity Securities [Line Items]    
Amortized Cost $ 198,896  
Gross Unrealized Gains 0  
Gross Unrealized Losses 2,779  
Debt Securities, Held-to-Maturity, Fair Value $ 196,117  
Weighted Average Yield 3.34%  
Due from 1 to 5 years | Investment securities | US Treasury securities    
Schedule of Held-to-maturity Securities [Line Items]    
Amortized Cost   $ 197,635
Gross Unrealized Gains   0
Gross Unrealized Losses   3,526
Debt Securities, Held-to-Maturity, Fair Value   $ 194,109
Weighted Average Yield   3.36%
Due after 10 years | Mortgage-backed securities | FNMA and FHLMC certificates    
Schedule of Held-to-maturity Securities [Line Items]    
Amortized Cost $ 320,249 $ 337,435
Gross Unrealized Gains 0 0
Gross Unrealized Losses 74,607 62,358
Debt Securities, Held-to-Maturity, Fair Value $ 245,642 $ 275,077
Weighted Average Yield 1.72% 1.71%