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Net Income Per Share Net Income Per Share (Schedule of Securities Excluded from Net Income Per Share) (Details) (USD $)
 9 Months Ended 12 Months Ended
Sep. 30, 2014
Dec. 31, 2013
Options excluded from diluted net income per share 200leu_OptionsWithExercisePriceGreaterThanMarketPrice 1,000leu_OptionsWithExercisePriceGreaterThanMarketPrice
Warrants excluded from diluted net income per share 250,000leu_WarrantsWithExercisePriceGreaterThanMarketPrice 250,000leu_WarrantsWithExercisePriceGreaterThanMarketPrice
Exercise price of excluded warrants $ 187.50invest_InvestmentWarrantsExercisePrice $ 187.50invest_InvestmentWarrantsExercisePrice
Minimum [Member]    
Exercise price of excluded options $ 283.25invest_InvestmentOptionsExercisePrice
/ us-gaap_RangeAxis
= us-gaap_MinimumMember		 $ 177.50invest_InvestmentOptionsExercisePrice
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
Maximum [Member]    
Exercise price of excluded options $ 357.00invest_InvestmentOptionsExercisePrice
/ us-gaap_RangeAxis
= us-gaap_MaximumMember		 $ 357.00invest_InvestmentOptionsExercisePrice
/ us-gaap_RangeAxis
= us-gaap_MaximumMember