Quarterly report pursuant to Section 13 or 15(d)

Goodwill and intangible assets (Details) - Schedule of useful lives for acquisitions

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Goodwill and intangible assets (Details) - Schedule of useful lives for acquisitions
 3 Months Ended
Oct. 31, 2013
Customer Relationships [Member]
  
Goodwill and intangible assets (Details) - Schedule of useful lives for acquisitions [Line Items]  
Weighted average remaining useful life 7 years
Trademarks [Member]
  
Goodwill and intangible assets (Details) - Schedule of useful lives for acquisitions [Line Items]  
Useful life assigned 5 years
Weighted average remaining useful life 4 years
Other Intangible Assets [Member]
  
Goodwill and intangible assets (Details) - Schedule of useful lives for acquisitions [Line Items]  
Weighted average remaining useful life 2 years
Minimum [Member] | Customer Relationships [Member]
  
Goodwill and intangible assets (Details) - Schedule of useful lives for acquisitions [Line Items]  
Useful life assigned 8 years
Minimum [Member] | Other Intangible Assets [Member]
  
Goodwill and intangible assets (Details) - Schedule of useful lives for acquisitions [Line Items]  
Useful life assigned 4 years
Maximum [Member] | Customer Relationships [Member]
  
Goodwill and intangible assets (Details) - Schedule of useful lives for acquisitions [Line Items]  
Useful life assigned 15 years
Maximum [Member] | Other Intangible Assets [Member]
  
Goodwill and intangible assets (Details) - Schedule of useful lives for acquisitions [Line Items]  
Useful life assigned 5 years