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v2.4.0.6

Subsequent Events (Details) (USD $) | 0 Months Ended | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Jun. 05, 2012 | Apr. 04, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Mar. 31, 2011 | Mar. 31, 2010 | Apr. 03, 2012
Short-term Debt [Line Items] |  |  |  |  |  |  |
Convertible debt, carrying value |  | $ 25,000,000 |  |  |  |  |
Convertible debt, effective interest rate |  | 7.00% |  |  |  |  |
Convertible notes, conversion price per share |  | $ 4.85 |  |  |  |  |
Convertible debt, premium as a percent over closing price |  |  |  |  |  |  | 20.00%
Warrants, number of shares available to purchase | 139,000 | 3,100,000 |  |  |  |  |
Warrants, exercise price per share | $ 3.59 | $ 5.45 |  |  |  |  |
Convertible notes and warrants, aggregate principal amount issuable |  |  |  | 15,000,000 |  |  |
Borrowed Funds | 10,000,000 |  |  |  |  |  |
Floating rate of interest | 11.00% |  |  |  |  |  |
Prime rate, maximum | 3.75% |  |  |  |  |  |
Borrowing capacity |  |  | 9,000,000 |  |  |  |
Change in restricted cash |  |  | 8,500,000 | 9,093,000 | (247,000) | (1,602,000) |
Reduction of adverse purchase commitments liability |  |  | 7,400,000 |  |  |  |
Letter of Credit [Member] |  |  |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |  |  |
Borrowing capacity |  |  | 9,000,000 |  |  |  |
Change in restricted cash |  |  | 8,500,000 |  |  |  |
Reduction of adverse purchase commitments liability |  |  | $ 7,400,000 |  |  |  |

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