Property, Buildings and Equipment - Schedule of Property, Buildings and Equipment (Detail) - USD ($)	Mar. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Property, buildings and equipment	$ 61,780,263	$ 61,720,010
Less accumulated depreciation	(42,988,103)	(42,496,099)
Property, buildings and equipment, net	18,792,160	19,223,911
Land and Land Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, buildings and equipment	8,458,554	8,458,554
Buildings and Recreational Facilities [Member]
Property, Plant and Equipment [Line Items]
Property, buildings and equipment	31,947,870	31,942,695
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, buildings and equipment	20,891,843	20,836,945
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property, buildings and equipment	$ 481,996	$ 481,816