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Revenue from Contracts with Customers (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Disaggregation of Revenue [Line Items]
Noninterest income within scope of Topic 606	$ 30,158	$ 31,007
Wealth management fees
Disaggregation of Revenue [Line Items]
Noninterest income within scope of Topic 606	9,708	8,884
Service charges on deposit accounts
Disaggregation of Revenue [Line Items]
Noninterest income within scope of Topic 606	8,124	10,077
Debit card and ATM fees
Disaggregation of Revenue [Line Items]
Noninterest income within scope of Topic 606	5,143	4,998
Investment product fees
Disaggregation of Revenue [Line Items]
Noninterest income within scope of Topic 606	5,864	5,874
Merchant processing fees
Disaggregation of Revenue [Line Items]
Noninterest income within scope of Topic 606	824	804
Gain (loss) on other real estate owned
Disaggregation of Revenue [Line Items]
Noninterest income within scope of Topic 606	110	(56)
Safe deposit box fees
Disaggregation of Revenue [Line Items]
Noninterest income within scope of Topic 606	363	310
Insurance premiums and commissions
Disaggregation of Revenue [Line Items]
Noninterest income within scope of Topic 606	$ 22	$ 116

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

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