Income Taxes - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Sep. 01, 2018	Jul. 31, 2015
Operating Loss Carryforwards [Line Items]
Revaluation of net deferred tax assets as a result of the Tax Cuts and Jobs Act	$ 0	$ 0	$ 14,486,000
Effective tax rate	22.30%	22.12%
Operating loss carryforwards allowance	$ 0
Accrued interest and penalties related to unrecognized tax benefits	105,000	$ 244,000	169,000
Federal
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards		36,006,000	76,919,000
State
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards		$ 40,806,000	$ 65,583,000
Brand Group Holdings, Inc. | Federal
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards				$ 81,288,000
Operating loss carryforwards, not subject to expiration	32,014,000
Brand Group Holdings, Inc. | State
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards				$ 55,067,000
Operating loss carryforwards, not subject to expiration	36,973,000
Heritage Financial Group | Federal
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	3,992,000				$ 18,321,000
Heritage Financial Group | State
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	$ 3,313,000				$ 16,849,000