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Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions (Details) (USD $)
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6 Months Ended |
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Sep. 30, 2012
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| Stock Based Compensation Schedule Of Share-based Payment Award, Stock Options, Valuation Assumptions 1 |
$ 0 |
| Stock Based Compensation Schedule Of Share-based Payment Award, Stock Options, Valuation Assumptions 2 |
0 |
| Stock Based Compensation Schedule Of Share-based Payment Award, Stock Options, Valuation Assumptions 3 |
65 |
| Stock Based Compensation Schedule Of Share-based Payment Award, Stock Options, Valuation Assumptions 4 |
70.00% |
| Stock Based Compensation Schedule Of Share-based Payment Award, Stock Options, Valuation Assumptions 5 |
$ 87 |
| Stock Based Compensation Schedule Of Share-based Payment Award, Stock Options, Valuation Assumptions 6 |
91.00% |
| Stock Based Compensation Schedule Of Share-based Payment Award, Stock Options, Valuation Assumptions 7 |
0.19 |
| Stock Based Compensation Schedule Of Share-based Payment Award, Stock Options, Valuation Assumptions 8 |
0.33% |
| Stock Based Compensation Schedule Of Share-based Payment Award, Stock Options, Valuation Assumptions 9 |
0.25 |
| Stock Based Compensation Schedule Of Share-based Payment Award, Stock Options, Valuation Assumptions 10 |
1.21% |
| Stock Based Compensation Schedule Of Share-based Payment Award, Stock Options, Valuation Assumptions 7 |
3.19 |
| Stock Based Compensation Schedule Of Share-based Payment Award, Stock Options, Valuation Assumptions 8 |
3.25 |