Income Taxes (Details) - USD ($)		3 Months Ended		9 Months Ended		12 Months Ended
	Aug. 23, 2018	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2017	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Income tax expense (benefit)		$ 1,132,000	$ 810,000	$ 3,920,000	$ 810,000
Federal income tax expense	$ 0
Net deferred tax assets		56,500,000		56,500,000
Prepayment of income taxes		500,000		500,000			$ 800,000
Accrued interest and penalties		$ 0		$ 0
U.S. federal corporate tax rate				21.00%		35.00%