Income Taxes, Textuals (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Feb. 01, 2018	Dec. 31, 2016
Operating Loss Carryforwards [Line Items]
Valuation allowance for deferred tax assets	$ (251,000)	$ (269,000)		$ 0
Operating tax loss carryforwards from acquisitions	56,000,000
Deferred Other Tax Expense (Benefit)	15,000,000
Other Tax Expense (Benefit)	9,000,000
Bad debt from acquired savings banks	100,000,000
Deferred tax on bad debt from acquired savings banks	25,000,000
Unrecognized tax benefit impact on effective tax rate	1,000,000	3,000,000
Interest and penalty expense (benefit)	1,000,000	1,000,000
Accrued interest and penalties		1,000,000
State and Local Jurisdiction
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	120,000,000
Operating tax loss carryforwards from acquisitions	42,000,000		$ 51,000,000
Internal Revenue Service (IRS)
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	3,000,000	$ 3,000,000
Operating tax loss carryforwards from acquisitions			$ 5,000,000
Tax Credit Carryforward, Amount	$ 1,000,000