Annual report pursuant to Section 13 and 15(d)

Goodwill and intangible assets (Details) - Schedule of indefinite-lived intangible assets

v3.3.0.814
Goodwill and intangible assets (Details) - Schedule of indefinite-lived intangible assets - USD ($)
$ in Thousands
12 Months Ended
Jul. 31, 2015
Jul. 31, 2014
Jul. 31, 2013
Indefinite-lived Intangible Assets [Line Items]      
Gross $ 27,838 $ 28,478  
Accumulated Amortization (21,683) (20,370)  
Net 6,155 8,108  
Amortization expense, Accumulated Amortization (1,770) (1,840) $ (1,990)
Amortization expense, Net (1,770) (1,840) (1,990)
Life Sciences [Member]      
Indefinite-lived Intangible Assets [Line Items]      
Gross 27,838 28,478 28,214
Accumulated Amortization (21,683) (20,370) (18,271)
Net 6,155 8,108 $ 9,943
Amortization expense, Accumulated Amortization (1,770) (1,840)  
Amortization expense, Net (1,770) (1,840)  
Foreign currency translation, Gross (640) 264  
Foreign currency translation, Accumulated Amortization 457 (259)  
Foreign currency translation, Net $ (183) $ 5