Other Assets and Other Liabilities Held for Sale (Details) - USD ($) $ in Millions				2 Months Ended
	Aug. 01, 2020	May 31, 2020	Dec. 20, 2019	Jul. 31, 2020	Feb. 10, 2020
Spirit of Texas Bank, SSB
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total loans, excluding loans not subject to the Branch Purchase			$ 259.9
Total deposits, excluding deposits not subject to the Branch Purchase			$ 159.9
Post closing adjustment multiplier, percent			5.00%
Subsequent Event | First Western Trust Bank
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total loans, excluding loans not subject to the Branch Purchase					$ 105.0
Total deposits, excluding deposits not subject to the Branch Purchase					$ 58.0
Forecast | First Western Trust Bank
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Post closing adjustment multiplier, percent	8.06%	6.06%		7.06%