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Statements of Cash Flows (Unaudited) (USD $)
 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Cash Flows From Operating Activities:    
Net Income $ 1,387,574 $ 641,117
Less non-cash (income) expenses included in net income:    
Depreciation, depletion and amortization 8,507 51,507
Deferred income tax expense (2,828) (11,565)
Less non-operating activities:    
Gain from sale of land and other assets (124,000) (306)
Change in operating assets and liabilities:    
(Increase) decrease in current assets (94,748) 7,724
Increase (decrease) in current liabilities (47,519) 11,551
Net cash provided from operating activities 1,126,986 700,028
Cash Flows From Investing Activities:    
Maturity proceeds 495,625  
Purchases (261,384) (725,625)
Sales proceeds   787,841
Purchases   (12,560)
Sales proceeds 159,000 167
Purchases (136,221) (604,483)
Net cash provided from (used in) investing activities 257,020 (554,660)
Cash Flows From Financing Activities:    
Dividends paid, net of reversion (399,811) (394,549)
Net cash used in financing activities (399,811) (394,549)
Net increase (decrease) in cash and cash equivalents 984,195 (249,181)
Beginning 4,124,908 5,182,316
Ending 5,109,103 4,933,135
Income taxes 781,641 139,660
Net change in recognized and unrecognized unrealized gains (losses) on available-for-sale securities   $ (9,302)