Transfers Accounted for as Secured Borrowings (Details) - U.S. Government-sponsored mortgage-backed securities - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Assets Sold under Agreements to Repurchase [Line Items]
Remaining Contractual Maturity of the Agreements	$ 169,697	$ 181,577
Overnight and Continuous
Assets Sold under Agreements to Repurchase [Line Items]
Remaining Contractual Maturity of the Agreements	169,697	181,577
Up to 30 Days
Assets Sold under Agreements to Repurchase [Line Items]
Remaining Contractual Maturity of the Agreements	0	0
30-90 Days
Assets Sold under Agreements to Repurchase [Line Items]
Remaining Contractual Maturity of the Agreements	0	0
Greater Than 90 Days
Assets Sold under Agreements to Repurchase [Line Items]
Remaining Contractual Maturity of the Agreements	$ 0	$ 0