Income Taxes - Additional Information (Detail) - USD ($)	9 Months Ended
	Sep. 30, 2020	Mar. 31, 2020	Dec. 31, 2019
Operating Loss Carryforwards [Line Items]
Other deferred tax assets, net	$ 25,600,000		$ 26,100,000
Income tax refund receivable	4,405,349	$ 1,600,000
Parent Company [Member]
Operating Loss Carryforwards [Line Items]
Valuation allowance related to the portion of operating loss carryforwards	$ 7,500,000
Earliest Tax Year [Member]
Operating Loss Carryforwards [Line Items]
Tax years open for examination	2016
Latest Tax Year [Member]
Operating Loss Carryforwards [Line Items]
Tax years open for examination	2019