Income Tax Provision - Summary of Income Tax Expense (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Income Tax Provision [Line Items]
Deferred income tax expense (benefit)			$ (365,000)	$ 4,653,000
Total income tax expense	$ (63,000)	$ 4,653,000	2,395,047	4,653,000
Greens Hold Co [Member]
Income Tax Provision [Line Items]
Current income tax expense	138,000	4,100,000	2,760,047	4,100,000
Deferred income tax expense (benefit)	(201,000)	553,000	(365,000)	553,000
Total income tax expense	$ (63,000)	$ 4,653,000	$ 2,395,047	$ 4,653,000