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Consolidated Balance Sheets (Parenthetical) (USD $) | Sep. 30, 2012 | Jun. 30, 2012
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Oil and natural gas properties, excluded from amortization (in dollars) | 7,782,060 | 6,042,094
Preferred stock, par value (in dollars per share) | 0.001 | 0.001
Preferred stock, shares authorized | 5,000,000 | 5,000,000
Preferred stock, liquidation preference (in dollars per share) | 25.00 | 25.00
Common stock, par value (in dollars per share) | 0.001 | 0.001
Common stock, shares authorized | 100,000,000 | 100,000,000
Common stock, issued shares | 28,840,163 | 28,670,424
Common stock, outstanding shares | 28,051,963 | 27,882,224
Treasury stock, shares | 788,200 | 788,200
Series A Cumulative Preferred Stock |  |
Preferred stock, shares authorized | 1,000,000 | 1,000,000
Preferred stock, shares issued | 317,319 | 317,319
Preferred stock, shares outstanding | 317,319 | 317,319

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