Derivatives - Additional Information (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2021 USD ($) Derivatives	Mar. 31, 2020 USD ($)	Dec. 31, 2020 USD ($)
Risk participation Agreements [Line Items]
Derivative, Gain (Loss) on Derivative, Net	$ 1,430	$ (1,741)
Risk Participation Agreements Purchased [Domain]
Risk participation Agreements [Line Items]
Number of interest rate swaps | Derivatives	36
Risk Participation Agreements Sold [Domain]
Risk participation Agreements [Line Items]
Number of interest rate swaps | Derivatives	15
Interest Rate Swap [Member]
Risk participation Agreements [Line Items]
Derivative Instruments Designated As Hedging Instruments Interest Expense	$ 226	(54)
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member]
Risk participation Agreements [Line Items]
Derivative, Fair Value, Net	1,824		$ 3,665
Derivative, Notional Amount	70,000		70,000
Forward Contracts [Member]
Risk participation Agreements [Line Items]
Derivative Liability, Cost Basis, Gross Asset	12,200		25,000
Derivative Liability, Fair Value, Gross Asset	13,600		28,400
Derivative Liability, Notional Amount, Gross Asset	41,600		47,900
Derivative, Gain (Loss) on Derivative, Net	(1,100)
Forward Contracts [Member] | Designated as Hedging Instrument [Member]
Risk participation Agreements [Line Items]
Derivative, Fair Value, Net	(559)		483
Derivative, Notional Amount	49,000		65,000
Derivative, Gain (Loss) on Derivative, Net	(1,042)	481
Foreign Exchange [Member]
Risk participation Agreements [Line Items]
Derivative, Net Hedge Ineffectiveness Gain (Loss)	2	$ 5
Foreign Exchange Contract [Member] | Designated as Hedging Instrument [Member]
Risk participation Agreements [Line Items]
Derivative, Fair Value, Net	(12)		5
Derivative, Notional Amount	1,989		2,119
Derivative Liability, Cost Basis, Gross Asset	2,000		2,100
Derivative Liability, Fair Value, Gross Asset	2,000		$ 2,100
Interest Rate Macro Swap | Designated as Hedging Instrument [Member]
Risk participation Agreements [Line Items]
Derivative, Notional Amount	$ 300,000
Derivative, Underlying	300.0 million
2024 [Member] | Interest Rate Swap [Member] | Designated as Hedging Instrument [Member]
Risk participation Agreements [Line Items]
Derivative, Notional Amount	$ 30,000
2026 [Member] | Interest Rate Swap [Member] | Designated as Hedging Instrument [Member]
Risk participation Agreements [Line Items]
Derivative, Notional Amount	40,000
Four Year Oiriginal Maturity | Interest Rate Macro Swap | Designated as Hedging Instrument [Member]
Risk participation Agreements [Line Items]
Derivative, Notional Amount	150,000
Five Year Original Maturity | Interest Rate Macro Swap | Designated as Hedging Instrument [Member]
Risk participation Agreements [Line Items]
Derivative, Notional Amount	$ 150,000