Investment Property and Equipment (Details 1) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Summary of accumulated depreciation by major classes of assets
Total Accumulated Depreciation	$ 99,522,180	$ 84,655,017
Site and Land Improvements [Member]
Summary of accumulated depreciation by major classes of assets
Total Accumulated Depreciation	74,129,770	64,292,239
Buildings and Improvements [Member]
Summary of accumulated depreciation by major classes of assets
Total Accumulated Depreciation	3,583,269	3,036,082
Rental Homes and Accessories [Member]
Summary of accumulated depreciation by major classes of assets
Total Accumulated Depreciation	12,706,873	9,107,422
Equipment and Vehicles [Member]
Summary of accumulated depreciation by major classes of assets
Total Accumulated Depreciation	$ 9,102,268	$ 8,219,274