Fair Value - Changes in Fair Value Levels and in Level 3 Liabilities (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Fair value
Asset transfers out of Level 1 into Level 2	$ 0	$ 0
Asset transfers into (out of) Level 3	0	0
Liability transfers out of Level 1 into Level 2	0	0
Liability transfers into (out of) Level 3	0	0
Visa derivative | Visa Derivative
Changes in Level 3 liabilities measured at fair value on a recurring basis
Balance	(4,554,000)	(4,233,000)
Total net (losses) gains included in other noninterest income	(5,909,000)	(4,641,000)
Settlements	4,933,000	4,320,000
Balance	(5,530,000)	(4,554,000)
Total net (losses) gains included in net income attributable to the change in unrealized gains or losses related to liabilities still held	$ (5,909,000)	$ (4,641,000)