Annual report pursuant to Section 13 and 15(d)

Accrued Liabilities, Other Current Liabilities and Other Liabilities (Details) - Accrued liabilities

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Accrued Liabilities, Other Current Liabilities and Other Liabilities (Details) - Accrued liabilities (USD $)
In Thousands, unless otherwise specified
Jul. 31, 2014
Jul. 31, 2013
Accrued liabilities [Abstract]    
Legal $ 4,721 $ 3,104
Payroll, benefits, severance and commissions 4,959 4,794
Research and development 400 721
Professional fees 638 863
Other 2,199 2,294
$ 12,917 $ 11,776