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Other Comprehensive Income - Changes in accumulated other comprehensive income (loss), net of tax (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Debt Securities, Available-for-sale [Abstract]      
Beginning balance $ 1,240,892 $ 1,190,681 $ 1,108,941
Other comprehensive income (loss) before reclassifications (27,923) 13,044 9,205
Amounts reclassified from accumulated other comprehensive income (1,819) (503) (1,971)
Other comprehensive income (loss) (29,742) 12,541 7,234
Ending balance 1,350,775 1,240,892 1,190,681
Securities Available For Sale      
Debt Securities, Available-for-sale [Abstract]      
Beginning balance 16,168 3,109 (7,044)
Other comprehensive income (loss) before reclassifications (27,923) 14,422 11,254
Amounts reclassified from accumulated other comprehensive income (2,203) (1,363) (1,101)
Other comprehensive income (loss) (30,126) 13,059 10,153
Ending balance (13,958) 16,168 3,109
Derivatives      
Debt Securities, Available-for-sale [Abstract]      
Beginning balance (668) (150) 2,769
Other comprehensive income (loss) before reclassifications 0 (1,378) (2,049)
Amounts reclassified from accumulated other comprehensive income 384 860 (870)
Other comprehensive income (loss) 384 (518) (2,919)
Ending balance (284) (668) (150)
Accumulated Other Comprehensive Income (Loss)      
Debt Securities, Available-for-sale [Abstract]      
Beginning balance 15,500 2,959 (4,275)
Other comprehensive income (loss) (29,742) 12,541 7,234
Ending balance $ (14,242) $ 15,500 $ 2,959