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Stock Warrant Liability (Details) (USD $)
|
3 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
|
Jun. 30, 2011
|
Mar. 31, 2010
|
Mar. 31, 2007
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Jan. 31, 2010
|
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| Fair Value Assumptions and Methodology [Abstract] | ||||
| Senior Notes | $ 17,000,000 | |||
|
Stock Warrant [Member]
|
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| Fair Value Assumptions and Methodology [Abstract] | ||||
| Class of Warrant or Right, Term | 5 years | |||
| Number of shares called by warrants or rights | 1,000,000 | |||
| Warrants exercisable | 8,018,868 | |||
| Price per share (in dollars per share) | $ 0.53 | |||
| Exercise price per share (in dollars per share) | $ 4.25 | |||
| Risk Free Interest Rate (in hundredths) | 0.02% | |||
| Expected Term | 2 months 1 day | |||
| Expected Volatility | 51.04% | |||
| Decrease in fair value of stock warrant liability | $ 72,000 | |||