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Securities - Schedule of company's investments' gross unrealized losses and fair value, aggregated by investment category and length of time (Details) - USD ($)
$ in Thousands
Sep. 30, 2023
Dec. 31, 2022
Securities    
Less than 12 Months, Fair Value $ 111,230 $ 155,816
Less than 12 Months, Unrealized Losses (5,653) (9,941)
12 Months or More, Fair Value 111,425 10,300
12 Months or More, Unrealized Losses (15,063) (1,501)
Total, Fair Value 222,655 166,116
Total, Unrealized Losses (20,716) (11,442)
U.S. government agencies    
Securities    
Less than 12 Months, Fair Value 0 44,032
Less than 12 Months, Unrealized Losses 0 (968)
12 Months or More, Fair Value 43,645 0
12 Months or More, Unrealized Losses (1,355) 0
Total, Fair Value 43,645 44,032
Total, Unrealized Losses (1,355) (968)
State and municipal obligations    
Securities    
Less than 12 Months, Fair Value 107,520 100,599
Less than 12 Months, Unrealized Losses (4,831) (7,408)
12 Months or More, Fair Value 47,455 0
12 Months or More, Unrealized Losses (9,522) 0
Total, Fair Value 154,975 100,599
Total, Unrealized Losses (14,353) (7,408)
Subordinated Notes    
Securities    
Less than 12 Months, Fair Value 3,710 11,185
Less than 12 Months, Unrealized Losses (822) (1,565)
12 Months or More, Fair Value 20,325 10,300
12 Months or More, Unrealized Losses (4,186) (1,501)
Total, Fair Value 24,035 21,485
Total, Unrealized Losses $ (5,008) $ (3,066)