Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions (Details)	12 Months Ended
Dec. 31, 2012 Y
Stock-based Compensation Schedule Of Share-based Payment Award, Stock Options, Valuation Assumptions 1	0.30%
Stock-based Compensation Schedule Of Share-based Payment Award, Stock Options, Valuation Assumptions 2	0.90%
Stock-based Compensation Schedule Of Share-based Payment Award, Stock Options, Valuation Assumptions 3	2.5
Stock-based Compensation Schedule Of Share-based Payment Award, Stock Options, Valuation Assumptions 4	3.3
Stock-based Compensation Schedule Of Share-based Payment Award, Stock Options, Valuation Assumptions 5	115.00%
Stock-based Compensation Schedule Of Share-based Payment Award, Stock Options, Valuation Assumptions 6	126.00%
Stock-based Compensation Schedule Of Share-based Payment Award, Stock Options, Valuation Assumptions 7	0.00%

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