Income Taxes - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Operating Loss Carryforwards
Temporary differences related to provision for loan losses not expected to reverse therefore not included in deferred tax assets	$ 4.0
Total state net operating loss carryforwards	454.0
Valuation allowance	5.0	$ 14.0
Income tax penalties and interest expense (less than)	1.0	0.0	$ 0.0
Federal
Operating Loss Carryforwards
Operating loss carryforwards	68.0	$ 154.0
State and Local Jurisdiction
Operating Loss Carryforwards
Total state deferred tax asset	35.0
Operating loss carryforwards, amount subject to annual use limitation	30.0
Valuation allowance	$ 5.0