Income Tax Provision - Summary of Income Tax Expense (Details) - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Income Tax Provision [Line Items]
Total income tax expense (benefit)	$ (7,000)	$ 2,458,047
Greens Hold Co [Member]
Income Tax Provision [Line Items]
Current income tax expense (benefit)	(41,000)	2,622,047
Deferred income tax expense (benefit)	34,000	(164,000)
Total income tax expense (benefit)	$ (7,000)	$ 2,458,047