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CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands | Total | Common Stock [Member] | Treasury Stock [Member] | Additional Paid-in Capital [Member] | Accumulated Deficit | Accumulated Other Comprehensive Loss [Member]
--- | --- | --- | --- | --- | --- | ---
Balance at Apr. 30, 2013 | $ (9,206) | $ 39 | $ (1,252) | $ 23,580 | $ (31,474) | $ (100)
Balance (in shares) at Apr. 30, 2013 |  | 35,643,767 | 3,236,000 |  |  |
Stock-based compensation | 2,807 | $ 0 | $ 0 | 2,807 | 0 | 0
Exercise of options and warrants | 21 | $ 0 | $ 0 | 21 | 0 | 0
Exercise of options and warrants (in shares) |  | 33,750 | 0 |  |  |
Issuance of restricted stock | 0 | $ 0 | $ 0 | 0 | 0 | 0
Issuance of restricted stock (in shares) |  | 75,000 | 0 |  |  |
Amendment to Redeemable Stock | 16,881 | $ 31 | $ 0 | 16,851 | 0 | 0
Amendment to Redeemable Stock (in Shares) |  | 31,133,333 | 0 |  |  |
Foreign currency translation adjustment | 100 | $ 0 | $ 0 | 0 | 0 | 100
Net loss | (7,406) | 0 | 0 | 0 | (7,406) | 0
Balance at Apr. 30, 2014 | 3,197 | $ 70 | $ (1,252) | 43,259 | (38,880) | 0
Balance (in Shares) at Apr. 30, 2014 |  | 66,885,850 | 3,236,000 |  |  |
Stock-based compensation | 2,948 | $ 0 | $ 0 | 2,948 | 0 | 0
Exercise of options and warrants | 2 | $ 0 | $ 0 | 2 | 0 | 0
Exercise of options and warrants (in shares) |  | 3,750 | 0 |  |  |
Conversion of convertible notes and accrued interest | 2,060 | $ 0 | $ 0 | 2,060 | 0 | 0
Sale of common stock, net of issuance costs of $880k | 11,160 | $ 36 | $ 0 | 11,124 | 0 | 0
Sale of common stock, net of issuance costs of $880k (in shares) |  | 35,271,052 | 0 |  |  |
Issuance of share under anti-dilution provisions | 2 | $ 2 | $ 0 | 0 | 0 | 0
Issuance of share under anti-dilution provisions (in shares) |  | 2,264,450 | 0 |  |  |
Stock Option Modification | 214 | $ 0 | $ 0 | 214 |  |
Reclassification of warrant Liability | 1,616 | 0 | 0 | 1,616 |  |
Net loss | (13,140) | 0 | 0 | 0 | (13,140) | 0
Balance at Apr. 30, 2015 | $ 8,059 | $ 108 | $ (1,252) | $ 61,223 | $ (52,020) | $ 0
Balance (in Shares) at Apr. 30, 2015 |  | 104,425,102 | 3,236,000 |  |  |

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