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Investment Securities - Unrealized losses (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Schedule of Available-for-sale Securities    
Debt securities, amortized cost $ 740,468 $ 1,098,373
Less than 12 Months, Fair Value 237,917 496,816
12 Months or More, Fair Value 410,654 75,609
Total Fair Value 648,571 572,425
Less than 12 Months, Unrealized Losses (27,795) (7,842)
12 Months or More, Unrealized Losses (63,866) (1,696)
Total Unrealized Losses (91,661) (9,538)
Held-to-maturity Securities, Less than 12 Months, Fair Value 91,701  
Held-to-maturity Securities, Less than 12 Months, Unrealized Losses (8,982)  
Held-to-maturity Securities, 12 Months or More, Fair Value 176,980  
Held-to-maturity Securities, 12 Months or More,Unrealized Losses (24,943)  
Held-to-maturity Securities, Total Fair Value 268,681  
Held-to-maturity Securities, Total Unrealized Losses (33,925)  
U.S. Government agencies    
Schedule of Available-for-sale Securities    
Debt securities, amortized cost 107 373
Less than 12 Months, Fair Value 0  
12 Months or More, Fair Value 98  
Total Fair Value 98  
Less than 12 Months, Unrealized Losses 0  
12 Months or More, Unrealized Losses (9)  
Total Unrealized Losses (9)  
Obligations of states and political subdivisions    
Schedule of Available-for-sale Securities    
Debt securities, amortized cost 201,638 512,952
Less than 12 Months, Fair Value 90,808 143,336
12 Months or More, Fair Value 84,177 6,336
Total Fair Value 174,985 149,672
Less than 12 Months, Unrealized Losses (12,208) (2,896)
12 Months or More, Unrealized Losses (14,445) (292)
Total Unrealized Losses (26,653) (3,188)
Held-to-maturity Securities, Less than 12 Months, Fair Value 48,311  
Held-to-maturity Securities, Less than 12 Months, Unrealized Losses (5,505)  
Held-to-maturity Securities, 12 Months or More, Fair Value 118,026  
Held-to-maturity Securities, 12 Months or More,Unrealized Losses (17,661)  
Held-to-maturity Securities, Total Fair Value 166,337  
Held-to-maturity Securities, Total Unrealized Losses (23,166)  
U.S. Government sponsored entities and agencies collateralized by residential mortgage obligations    
Schedule of Available-for-sale Securities    
Debt securities, amortized cost 117,292 213,471
Less than 12 Months, Fair Value 20,825 91,385
12 Months or More, Fair Value 88,520 40,365
Total Fair Value 109,345 131,750
Less than 12 Months, Unrealized Losses (1,058) (905)
12 Months or More, Unrealized Losses (6,745) (372)
Total Unrealized Losses (7,803) (1,277)
Held-to-maturity Securities, Less than 12 Months, Fair Value 0  
Held-to-maturity Securities, Less than 12 Months, Unrealized Losses 0  
Held-to-maturity Securities, 12 Months or More, Fair Value 8,668  
Held-to-maturity Securities, 12 Months or More,Unrealized Losses (1,762)  
Held-to-maturity Securities, Total Fair Value 8,668  
Held-to-maturity Securities, Total Unrealized Losses (1,762)  
Private label residential mortgage and asset backed securities    
Schedule of Available-for-sale Securities    
Debt securities, amortized cost 411,441 317,089
Less than 12 Months, Fair Value 126,284 230,987
12 Months or More, Fair Value 229,152 28,908
Total Fair Value 355,436 259,895
Less than 12 Months, Unrealized Losses (14,529) (3,661)
12 Months or More, Unrealized Losses (41,384) (1,032)
Total Unrealized Losses (55,913) (4,693)
Held-to-maturity Securities, Less than 12 Months, Fair Value 19,393  
Held-to-maturity Securities, Less than 12 Months, Unrealized Losses (1,916)  
Held-to-maturity Securities, 12 Months or More, Fair Value 31,367  
Held-to-maturity Securities, 12 Months or More,Unrealized Losses (4,015)  
Held-to-maturity Securities, Total Fair Value 50,760  
Held-to-maturity Securities, Total Unrealized Losses (5,931)  
Corporate Debt Securities    
Schedule of Available-for-sale Securities    
Debt securities, amortized cost   44,500
Less than 12 Months, Fair Value   21,183
12 Months or More, Fair Value   0
Total Fair Value   21,183
Less than 12 Months, Unrealized Losses   (317)
12 Months or More, Unrealized Losses   0
Total Unrealized Losses   (317)
Held-to-maturity Securities, Less than 12 Months, Fair Value 23,997  
Held-to-maturity Securities, Less than 12 Months, Unrealized Losses (1,561)  
Held-to-maturity Securities, 12 Months or More, Fair Value 18,919  
Held-to-maturity Securities, 12 Months or More,Unrealized Losses (1,505)  
Held-to-maturity Securities, Total Fair Value 42,916  
Held-to-maturity Securities, Total Unrealized Losses (3,066)  
US Treasury Securities    
Schedule of Available-for-sale Securities    
Debt securities, amortized cost 9,990 9,988
Less than 12 Months, Fair Value 0 9,925
12 Months or More, Fair Value 8,707 0
Total Fair Value 8,707 9,925
Less than 12 Months, Unrealized Losses 0 (63)
12 Months or More, Unrealized Losses (1,283) 0
Total Unrealized Losses $ (1,283) $ (63)