Real Estate and Accumulated Depreciation (Details 4) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Schedule of reconciliation of accumulated depreciation
Balance - Beginning of Year	$ 76,435,743	$ 65,658,602	$ 58,994,093
Additions:
Depreciation	14,341,575	11,318,194	6,869,251
Total Additions	14,341,575	11,318,194	6,869,251
Deletions	(357,405)	(541,053)	(204,742)
Balance - End of Year	$ 90,419,913	$ 76,435,743	$ 65,658,602