Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation (Details)

v3.8.0.1
Basis of Presentation (Details)
3 Months Ended
Oct. 31, 2017
Oct. 31, 2016
Clinical Labs [Member] | Sales Revenue, Net [Member]    
Basis of Presentation (Details) [Line Items]    
Concentration Risk, Percentage 40.00% 36.00%