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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) | $ 3 | $ (1,252) | $ 23,617 | $ (31,474) | $ (100)
Balance (in shares) at Apr. 30, 2013 |  | 2,970,314 | 269,686 |  |  |
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) |  | 2,813 | 0 |  |  |
Issuance of restricted stock | 0 | $ 0 | $ 0 | 0 | 0 | 0
Issuance of restricted stock (in shares) |  | 6,250 | 0 |  |  |
Amendment to Redeemable Stock | 16,881 | $ 3 | $ 0 | 16,879 | 0 | 0
Amendment to Redeemable Stock (in shares) |  | 2,594,444 | 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 | $ 6 | $ (1,252) | 43,323 | (38,880) | 0
Balance (in shares) at Apr. 30, 2014 |  | 5,573,821 | 269,686 |  |  |
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) |  | 313 | 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 | 11,161 | $ 3 | $ 0 | 11,158 | 0 | 0
Sale of common stock, net of issuance costs of $880k (in shares) |  | 2,939,254 | 0 |  |  |
Issuance of share under anti-dilution provisions | 1 | $ 0 | $ 0 | 1 | 0 | 0
Issuance of share under anti-dilution provisions (in shares) |  | 188,704 | 0 |  |  |
Stock Option Modification | 214 | $ 0 | $ 0 | 214 | 0 | 0
Reclassification of warrant Liability | 1,616 | 0 | 0 | 1,616 | 0 | 0
Net loss | (13,140) | 0 | 0 | 0 | (13,140) | 0
Balance at Apr. 30, 2015 | 8,059 | $ 9 | $ (1,252) | $ 61,322 | $ (52,020) | $ 0
Balance (in shares) at Apr. 30, 2015 |  | 8,702,092 | 269,686 |  |  |
Net loss | (7,872) |  |  |  |  |
Balance at Jan. 31, 2016 | $ 2,259 |  |  |  |  |

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