Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity (Details) - Schedule of stock option plans

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Stockholders' Equity (Details) - Schedule of stock option plans (USD $)
In Thousands, except Share data, unless otherwise specified
3 Months Ended
Oct. 31, 2014
Schedule of stock option plans [Abstract]  
Outstanding at July 31, 2014 1,155,910
Outstanding at July 31, 2014 $ 5.03
Cancelled or expired (39,900)
Cancelled or expired $ 14.05
Outstanding at end of period 1,116,010
Outstanding at end of period $ 4.71
Outstanding at end of period 3 years 36 days
Outstanding at end of period $ 2,849
Exercisable at end of period 361,862
Exercisable at end of period $ 6.91
Exercisable at end of period 3 years 6 months
Exercisable at end of period $ 523