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INVESTMENT SECURITIES (Schedule of amortized cost and fair value of securities held-to-maturity) (Details) - USD ($)
$ in Thousands
Jun. 30, 2022
Dec. 31, 2021
Schedule of Held-to-maturity Securities [Line Items]    
Amortized Cost $ 530,740 $ 382,099
Total Securities 486,000 380,100
Held-to-maturity Securities    
Schedule of Held-to-maturity Securities [Line Items]    
Amortized Cost 530,740 382,099
Gross Unrealized/Unrecognized Gains 71 410
Gross Unrealized/Unrecognized Losses (44,823) (2,401)
Total Securities 485,988 380,108
Held-to-maturity Securities | US Treasury Securities    
Schedule of Held-to-maturity Securities [Line Items]    
Amortized Cost 29,832 29,811
Gross Unrealized/Unrecognized Gains   6
Gross Unrealized/Unrecognized Losses (1,652) (43)
Total Securities 28,180 29,774
Held-to-maturity Securities | U.S. State and Municipal securities    
Schedule of Held-to-maturity Securities [Line Items]    
Amortized Cost 15,936 16,055
Gross Unrealized/Unrecognized Gains   299
Gross Unrealized/Unrecognized Losses (2,598) 0
Total Securities 13,338 16,354
Held-to-maturity Securities | Residential MBS    
Schedule of Held-to-maturity Securities [Line Items]    
Amortized Cost 476,851 328,095
Gross Unrealized/Unrecognized Gains 71 105
Gross Unrealized/Unrecognized Losses (39,662) (2,259)
Total Securities 437,260 325,941
Held-to-maturity Securities | Commercial MBS    
Schedule of Held-to-maturity Securities [Line Items]    
Amortized Cost 8,121 8,138
Gross Unrealized/Unrecognized Gains   0
Gross Unrealized/Unrecognized Losses (911) (99)
Total Securities $ 7,210 $ 8,039