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Revenue Recognition - Summary of Non Interest Income, Segregated by Revenue Streams in-Scope and Out-of-Scope of Topic 606 (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Noninterest income:      
Gain on OREO, net $ (1,177) $ (365) $ (105)
Other 7,007 11,277 9,956
Total noninterest income 47,385 49,870 59,042
Service Charges on Deposit Accounts [Member]      
Noninterest income:      
Revenue from contract with customer 17,152 16,561 20,010
Trust and Investment Services [Member]      
Noninterest income:      
Revenue from contract with customer 11,571 9,978 9,525
Bankcard Services [Member]      
Noninterest income:      
Revenue from contract with customer 1,789 1,886 3,163
Accounting Standards Update 2014-09 [Member]      
Noninterest income:      
Gain on OREO, net 1,177 388 129
Other 7,007 11,277 9,951
Total noninterest income 38,696 40,090 42,778
Accounting Standards Update 2014-09 [Member] | Service Charges on Deposit Accounts [Member]      
Noninterest income:      
Revenue from contract with customer 17,152 16,561 20,010
Accounting Standards Update 2014-09 [Member] | Trust and Investment Services [Member]      
Noninterest income:      
Revenue from contract with customer 11,571 9,978 9,525
Accounting Standards Update 2014-09 [Member] | Bankcard Services [Member]      
Noninterest income:      
Revenue from contract with customer 1,789 1,886 3,163
Accounting Standards Update 2014-09 Not Adopted [Member]      
Noninterest income:      
Total noninterest income $ 8,689 $ 9,780 $ 16,264