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Other Income and Expenses (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Other noninterest income:      
Interchange and other consumer fees $ 40,960 $ 36,158 $ 28,720
Bank-owned life insurance 18,784 17,361 12,535
Loan swap fees 4,568 4,758 4,043
SBA loan sales 5,579 4,933 4,604
Gain on other equity investments 1,072 2,789 2,778
Other noninterest income 11,940 4,838 4,091
Total other noninterest income 82,903 70,837 56,771
Other noninterest expense:      
Deposit related expenses 24,392 17,017 22,768
Lending related expenses 40,784 24,573 19,428
Wealth management related expenses 2,053 1,986 1,837
Audit, exam and insurance expense 10,596 9,194 7,791
FHLB restructuring charges 15,168 0 0
Administrative and other expenses $ 23,725 $ 18,906 $ 16,036