Annual report pursuant to Section 13 and 15(d)

Consolidated Statements of Stockholders' Equity

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Consolidated Statements of Stockholders' Equity (USD $)
Common Stock
Treasury Stock
Additional paid-in capital
Accumulated deficit
Total
Beginning balance at Apr. 30, 2010 $ 1,487,000   $ 15,441,000 $ (5,536,000) $ 11,392,000
Beginning balance (shares) at Apr. 30, 2010 1,487        
Issuance of shares under stock option plans (shares) 1        
Issuance of shares under stock option plans 1,000   11,000    12,000
Net loss       (4,633,000) (4,634,000)
Stock based compensation expense     610,000    610,000
Ending balance at Apr. 30, 2011 1,488,000   16,062,000 (10,169,000) 7,381,000
Ending balance (shares) at Apr. 30, 2011 1,488        
Net loss       (3,259,000) (3,259,000)
Stock based compensation expense     451,000    451,000
Issuance of shares under registered direct offering (shares) 296        
Issuance of shares under registered direct offering 296,000   2,702,000   2,998,000
Treasury stock purchased   (45,000)     (45,000)
Ending balance at Apr. 30, 2012 1,748,000 (45,000) 19,215,000 (13,428,000) 7,526,000
Ending balance (shares) at Apr. 30, 2012 1,748        
Net loss       (4,625,000) (4,625,000)
Stock based compensation expense     231,000   231,000
Treasury stock purchased and cancelled (shares) (129)        
Treasury stock purchased and cancelled (129,000) 45,000 (158,000)   (142,000)
Ending balance at Apr. 30, 2013 $ 1,755,000   $ 19,288,000 $ (18,053,000) $ 2,990,000
Ending balance (shares) at Apr. 30, 2013 1,755