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Net Income Per Share Net Income Per Share (Schedule of Securities Excluded from Net Income Per Share) (Details) (USD $) | 3 Months Ended
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Mar. 31, 2015 | Mar. 31, 2014
Options excluded from diluted net income per share | 85,000 leu_OptionsWithExercisePriceGreaterThanMarketPrice | 1,000 leu_OptionsWithExercisePriceGreaterThanMarketPrice
Warrants excluded from diluted net income per share |  | 250,000 leu_WarrantsWithExercisePriceGreaterThanMarketPrice
Exercise price of excluded options | $ 5.62 invest_InvestmentOptionsExercisePrice |
Exercise price of excluded warrants |  | $ 187.50 invest_InvestmentWarrantsExercisePrice
Minimum [Member] |  |
Exercise price of excluded options |  | $ 177.50 invest_InvestmentOptionsExercisePrice / us-gaap_RangeAxis = us-gaap_MinimumMember
Maximum [Member] |  |
Exercise price of excluded options |  | $ 357.00 invest_InvestmentOptionsExercisePrice / us-gaap_RangeAxis = us-gaap_MaximumMember

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- Definition Exercise price of the option. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Footnote 5 + Details
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- Definition Exercise price of the warrants. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column A + Details
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- Definition Options with exercise price greater than market price + References No definition available. + Details
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- Definition Warrants with exercise price greater than market price + References No definition available. + Details
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- Details
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- Details
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