Investment Property and Equipment - Summary of Accumulated Depreciation By Major Classes of Assets (Details) - USD ($)	Dec. 31, 2017	Dec. 31, 2016
Total Accumulated Depreciation	$ 166,444,512	$ 140,255,603
Site and Land Improvements [Member]
Total Accumulated Depreciation	114,617,282	99,161,090
Buildings and Improvements [Member]
Total Accumulated Depreciation	5,779,146	4,947,543
Rental Homes and Accessories [Member]
Total Accumulated Depreciation	33,621,420	24,906,990
Equipment and Vehicles [Member]
Total Accumulated Depreciation	$ 12,426,664	$ 11,239,980