Derivative Activities - Offsetting of Derivative Assets - Derivative Assets, Financial Assets, and Collateral Held by Counterparty (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Total
Net amounts of assets presented in the balance sheet	$ 333,695	$ 711,238
Net amount		711,238
JP Morgan
Total
Net amounts of assets presented in the balance sheet	1,744	17,149
Net amount		17,149
RJ O'Brien
Total
Net amounts of assets presented in the balance sheet	5,219	6,910
Net amount		6,910
Morgan Stanley Bank, N.A.
Total
Net amounts of assets presented in the balance sheet		2,443
Net amount		2,443
Citibank, N.A.
Total
Net amounts of assets presented in the balance sheet		2,026
Net amount		2,026
Bank of America, N.A.
Total
Net amounts of assets presented in the balance sheet	3,005
Other
Total
Net amounts of assets presented in the balance sheet	254	2,749
Net amount		2,749
Interest rate lock commitments
Total
Net amounts of assets presented in the balance sheet	$ 323,473	679,961
Net amount		$ 679,961