Income Taxes, Textuals (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Operating Loss Carryforwards [Line Items]
Valuation allowance for deferred tax assets	$ 0	$ (251)	$ (251)
Bad debt from acquired savings banks	100,000
Deferred tax on bad debt from acquired savings banks	25,000
Unrecognized tax benefit impact on effective tax rate	2,000	3,000
Loss on prepayments of FHLB advances	0		$ 0
Risk Management and Shared Serivies [Member]
Operating Loss Carryforwards [Line Items]
Loss on prepayments of FHLB advances		$ 44,650
State and Local Jurisdiction
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	79,000
Operating tax loss carryforwards from acquisitions	$ 32,000
Operating Loss Carryforwards, Expiration Begin Date	begin expiring in 2031
Internal Revenue Service (IRS)
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	$ 3,000