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SECURITIES - Amortized cost and Fair values of securities with gross unrealized gains and losses (Details) - USD ($)
$ in Thousands
Jun. 30, 2023
Dec. 31, 2022
Available-for-sale    
Amortized cost $ 913,908  
Amortized Cost (Pre-Adoption)   $ 934,456
Gross Unrealized Gains 21 106
Gross Unrealized Losses (90,341) (91,038)
Allowance for credit losses (800)  
Fair Value 822,788  
Fair Value   843,524
Held-to-maturity    
Amortized Cost 533,231  
Debt securities held-to-maturity   541,600
Gross Unrealized Gains 147 195
Gross Unrealized Losses (63,457) (62,994)
Fair Value 469,921 478,801
U.S. Treasury    
Available-for-sale    
Amortized cost 169,788  
Amortized Cost (Pre-Adoption)   169,860
Gross Unrealized Losses (14,648) (15,345)
Fair Value 155,140  
Fair Value   154,515
U.S. government agency    
Available-for-sale    
Amortized cost 56,833  
Amortized Cost (Pre-Adoption)   59,291
Gross Unrealized Losses (4,409) (4,134)
Fair Value 52,424  
Fair Value   55,157
Held-to-maturity    
Amortized Cost 88,436  
Debt securities held-to-maturity   88,424
Gross Unrealized Losses (9,615) (9,728)
Fair Value 78,821 78,696
Municipal securities    
Available-for-sale    
Amortized cost 273,263  
Amortized Cost (Pre-Adoption)   275,972
Gross Unrealized Gains 18 46
Gross Unrealized Losses (29,226) (32,189)
Fair Value 244,055  
Fair Value   243,829
Held-to-maturity    
Amortized Cost 39,756  
Debt securities held-to-maturity   42,167
Gross Unrealized Gains 147 195
Gross Unrealized Losses (422) (314)
Fair Value 39,481 42,048
Mortgage-backed: Agency residential    
Available-for-sale    
Amortized cost 208,470  
Amortized Cost (Pre-Adoption)   213,676
Gross Unrealized Gains   5
Gross Unrealized Losses (18,920) (18,240)
Fair Value 189,550  
Fair Value   195,441
Held-to-maturity    
Amortized Cost 100,685  
Debt securities held-to-maturity   102,728
Gross Unrealized Losses (7,003) (6,470)
Fair Value 93,682 96,258
Mortgage-backed: Agency commercial    
Available-for-sale    
Amortized cost 147,922  
Amortized Cost (Pre-Adoption)   150,060
Gross Unrealized Gains 3  
Gross Unrealized Losses (17,039) (17,172)
Fair Value 130,886  
Fair Value   132,888
Held-to-maturity    
Amortized Cost 304,354  
Debt securities held-to-maturity   308,281
Gross Unrealized Losses (46,417) (46,482)
Fair Value 257,937 261,799
Corporate    
Available-for-sale    
Amortized cost 57,632  
Amortized Cost (Pre-Adoption)   65,597
Gross Unrealized Gains   55
Gross Unrealized Losses (6,099) (3,958)
Allowance for credit losses (800)  
Fair Value $ 50,733  
Fair Value   $ 61,694