Derivatives - Additional Information (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2020 USD ($) Derivatives	Mar. 31, 2019 USD ($)	Dec. 31, 2019 USD ($)
Risk participation Agreements [Line Items]
Derivative, Gain (Loss) on Derivative, Net	$ (1,741)	$ (26)
Risk Participation Agreements Purchased [Domain]
Risk participation Agreements [Line Items]
Number of interest rate swaps | Derivatives	32
Risk Participation Agreements Sold [Domain]
Risk participation Agreements [Line Items]
Number of interest rate swaps | Derivatives	14
Forward Contracts [Member]
Risk participation Agreements [Line Items]
Derivative, Net Hedge Ineffectiveness Gain (Loss)	$ 0	0
Derivative Liability, Cost Basis, Gross Asset	13,600		$ 9,800
Derivative Liability, Fair Value, Gross Asset	15,800		10,700
Derivative Liability, Notional Amount, Gross Asset	41,400		25,500
Derivative, Gain (Loss) on Derivative, Net	900
Forward Contracts [Member] | Designated as Hedging Instrument [Member]
Risk participation Agreements [Line Items]
Derivative, Fair Value, Net	544		63
Derivative, Notional Amount	40,000		30,000
Derivative, Gain (Loss) on Derivative, Net	481	(64)
Interest Rate Contract [Member]
Risk participation Agreements [Line Items]
Derivative, Net Hedge Ineffectiveness Gain (Loss)	0	0
Foreign Exchange [Member]
Risk participation Agreements [Line Items]
Derivative, Net Hedge Ineffectiveness Gain (Loss)	5	2
Foreign Exchange Contract [Member] | Designated as Hedging Instrument [Member]
Risk participation Agreements [Line Items]
Derivative, Fair Value, Net	(37)		41
Derivative, Notional Amount	4,670		4,789
Derivative Liability, Cost Basis, Gross Asset	4,700		4,800
Derivative Liability, Fair Value, Gross Asset	4,600		4,800
Interest Rate Swap [Member]
Risk participation Agreements [Line Items]
Derivative Instruments Designated As Hedging Instruments Interest Income	0	(118)
Derivative Instruments Designated As Hedging Instruments Interest Expense	54	0
Derivative, Net Hedge Ineffectiveness Gain (Loss)	0	$ 7
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member]
Risk participation Agreements [Line Items]
Derivative, Fair Value, Net	3,779		(801)
Derivative, Notional Amount	70,000		$ 70,000
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