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Land and Subsurface Interests - Summary of Land and Development Costs (Detail) (USD $)
Dec. 31, 2013
Dec. 31, 2012
Real Estate [Abstract]    
Undeveloped Land $ 301,780 $ 1,004,607
Developed Land and Development Costs 23,467,134 26,843,918
Total Land and Development Costs $ 23,768,914 $ 27,848,525