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Income Taxes - Reconciliation of Income Tax Expense (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Amount      
Income taxes computed at statutory rate $ 27,811 $ 9,314 $ 13,975
Tax exempt revenue, net of nondeductible interest (1,339) (878) (644)
Low-income housing tax credits, net of amortization (468) (511) (514)
Other tax credits, net of add-backs (1,218) (1,218) (1,218)
Bank-owned life insurance income (170) (259) (158)
State income taxes, net of federal benefit 662 1,033 730
Stock-based compensation (1,272) 181 (100)
Nondeductible expense 106 257 413
Other (227) 77 182
Income tax expense $ 23,885 $ 7,996 $ 12,666
Percent      
Income taxes computed at statutory rate 21.00% 21.00% 21.00%
Tax exempt revenue, net of nondeductible interest (1.01%) (1.98%) (0.97%)
Low-income housing tax credits, net of amortization (0.35%) (1.15%) (0.77%)
Other tax credits, net of add-backs (0.92%) (2.75%) (1.83%)
Bank-owned life insurance income (0.13%) (0.58%) (0.24%)
State income taxes, net of federal benefit 0.50% 2.35% 1.10%
Stock-based compensation (0.96%) 0.41% (0.15%)
Nondeductible expense 0.08% 0.58% 0.62%
Other (0.17%) 0.16% 0.27%
Total income tax expense 18.04% 18.04% 19.03%