Income Taxes - Summary of Deferred Income Tax Assets (Liabilities) (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Deferred Income Tax Assets
Depreciation	$ 1,899,202	$ 2,142,204
Deferred Compensation	147,588	319,786
Charitable Contributions Carryforward		252,619
Deferred Oil Lease Income	922,254	256,716
Deferred Lease Expense	1,288,555	1,428,121
Pension and Other Post Retirement Benefits	(48,342)	593,489
Stock Options	837,156	766,042
Impairment Reserves	1,688,979	1,688,979
Other - Net	40,259	95,856
Gross Deferred Income Tax Assets	6,775,651	7,543,812
Less - Valuation Allowance	(415,453)	(621,528)
Net Deferred Income Tax Assets	6,360,198	6,922,284
Deferred Income Tax Liabilities
Sales of Real Estate	(37,810,005)	(38,937,151)
Commercial Mortgage Purchase Discount	(504,886)
Basis Difference in Joint Venture	(342,015)	(342,638)
Other - Net	(255,360)
Total Deferred Income Tax Liabilities	(38,912,266)	(39,279,789)
Net Deferred Income Tax Liabilities	$ (32,552,068)	$ (32,357,505)