Derivative Instruments - The Effect of Fair Value Hedge Accounting on the Consolidated Statements of Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives designated as hedging instruments	$ (7)	$ 187	$ (10)	$ 380
Interest Income
Derivative Instruments, Gain (Loss) [Line Items]
Hedged items	(1,027)
Derivatives designated as hedging instruments	932
Other income | Interest rate products
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives designated as hedging instruments	1	0	9	0
Other income | Other contracts
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives designated as hedging instruments	0	218	0	415
Other income | Equity warrants
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives designated as hedging instruments	$ (8)	$ (31)	$ (19)	$ (35)