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Stockholders' Equity - Narrative (Details) (USD $) | 3 Months Ended | 12 Months Ended | 0 Months Ended | 12 Months Ended | 0 Months Ended |  | 12 Months Ended
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Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2013 | Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2012 | Jun. 30, 2014 Series A Cumulative Preferred Stock | Jun. 30, 2013 Series A Cumulative Preferred Stock | Jun. 30, 2012 Series A Cumulative Preferred Stock | Sep. 06, 2012 Evolution Petroleum Corporation Amended and Restated 2004 Stock Plan Common Stock | Aug. 31, 2011 Evolution Petroleum Corporation Amended and Restated 2004 Stock Plan Common Stock | Jun. 30, 2014 Restricted Stock | Sep. 06, 2012 Restricted Stock Evolution Petroleum Corporation Amended and Restated 2004 Stock Plan | Aug. 31, 2011 Restricted Stock Evolution Petroleum Corporation Amended and Restated 2004 Stock Plan | Dec. 05, 2013 Outside Directors Evolution Petroleum Corporation Amended and Restated 2004 Stock Plan Common Stock | Dec. 05, 2011 Outside Directors Evolution Petroleum Corporation Amended and Restated 2004 Stock Plan Common Stock | Dec. 05, 2013 Outside Directors Restricted Stock Evolution Petroleum Corporation Amended and Restated 2004 Stock Plan item | Dec. 06, 2012 Outside Directors Restricted Stock Evolution Petroleum Corporation Amended and Restated 2004 Stock Plan item | Dec. 05, 2011 Outside Directors Restricted Stock Evolution Petroleum Corporation Amended and Restated 2004 Stock Plan item | Jun. 30, 2012 Weighted Average Series A Cumulative Preferred Stock | Jun. 30, 2012 Public Offering Series A Cumulative Preferred Stock | Jun. 30, 2012 At the Market Offering Series A Cumulative Preferred Stock
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Recovery of Short Swing Profits |  |  |  | $ 6,850 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of restricted common stock (shares) |  |  |  |  |  |  |  |  |  | 154,227 | 161,861 |  |  |  | 16,476 | 34,245 |  | 31,970 |  |  |  |
Restricted stock compensation not yet recognized |  |  |  |  |  |  |  |  |  |  |  | 997,403 | 1,223,020 | 1,029,436 |  |  |  |  |  |  |  |
Recognition period for restricted stock compensation expense not yet recognized |  |  |  |  |  |  |  |  |  |  |  | 2 years 1 month 6 days | 4 years | 4 years |  |  |  |  |  |  |  |
Directors receiving award, number |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5 | 5 | 5 |  |  |
Issuance of restricted common stock |  |  |  | 0 | 32 | 34 |  |  |  |  |  |  |  |  | 200,019 | 249,955 |  | 249,973 |  |  |  |
Restricted stock vesting period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 year | 1 year | 1 year |  |  |
Common shares issued during period for share based compensation (shares) |  |  |  | 1,568,832 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from the exercise of stock options |  |  |  | 3,252,801 | 70,719 | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock issued, nonqualified stock options and incentive warrants noncash (shares) |  |  |  | 2,635,696 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares received in lieu of cash payment (shares) |  |  |  | 50,956 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares received in lieu of cash payment, average cost of shares (in USD per share) |  |  |  | $ 12.14 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends paid |  |  |  | 9,723,833 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash dividends paid (per common share) | $ 0.10 | $ 0.10 | $ 0.10 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of preferred stock (in shares) |  |  |  |  |  |  |  |  | 317,319 |  |  |  |  |  |  |  |  |  |  |  | 220,000 | 97,319
Proceeds from issuance of preferred stock, net |  |  |  | 0 | 0 | 6,930,535 |  |  | 6,930,535 |  |  |  |  |  |  |  |  |  |  |  |  |
Cumulative Preferred Stock (as a percent) |  |  |  |  |  |  | 8.50% | 8.50% | 8.50% |  |  |  |  |  |  |  |  |  |  |  |  |
Share Price |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 23.80 |  |
Preferred stock, liquidation preference (in dollars per share) |  |  |  |  |  |  | $ 25 | $ 25.00 | $ 25.00 |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred Stock, Dividend Rate, Per-Dollar-Amount |  |  |  |  |  |  |  |  | $ 0.177083 |  |  |  |  |  |  |  |  |  |  |  |  |
Payments of Ordinary Dividends, Preferred Stock and Preference Stock |  |  |  | 674,302 | 674,302 | 630,391 | 674,302 | 674,302 | 630,391 |  |  |  |  |  |  |  |  |  |  |  |  |
Treasury Stock, Number of Shares and Restriction Disclosures [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Treasury stock retired (shares) |  |  |  | 801,889 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Treasury stock retired, value |  |  |  | 1,019,840 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchases of treasury stock (shares) |  |  |  | 186,714 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Treasury stock acquired, average cost (in USD per share) |  |  |  | $ 12.18 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchases of treasury stock |  |  |  | $ 2,273,857 | $ 137,818 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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