Derivatives and Hedging Activities - Gains and losses recognized in income on derivatives not designated as hedging instruments (Details) - Not designated as hedging instrument - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Derivative Instruments [Line Items]
Total gains and losses	$ 1,840	$ (1,544)	$ 1,097
Customer derivatives and dealer offsets | Other noninterest income
Derivative Instruments [Line Items]
Total gains and losses	3,302	6,732	2,878
Bifurcated embedded derivatives and dealer offsets | Other noninterest income
Derivative Instruments [Line Items]
Total gains and losses	433	(63)	212
De-designated hedges | Other noninterest income
Derivative Instruments [Line Items]
Total gains and losses	0	0	(193)
Mortgage banking derivatives | Mortgage loan revenue
Derivative Instruments [Line Items]
Total gains and losses	(1,805)	(7,873)	(1,797)
Risk participations | Other noninterest income
Derivative Instruments [Line Items]
Total gains and losses	$ (90)	$ (340)	$ (3)