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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