XML 16 R24.htm IDEA: XBRL DOCUMENT v2.4.0.6
Goodwill and Intangible Assets (Tables)
9 Months Ended
Apr. 30, 2013
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of aggregate amortization expense on intangible assets
April 30, 2013 July 31, 2012
Amortized intangibles:
Covenants not to compete $ 11,430 $ 11,087
Supply contracts 31,650 26,041
Trade name 2,440 -
Licenses and databases 1,552 1,316
Software 262 -
Accumulated amortization (34,234 ) (30,459 )
Net intangibles $ 13,100 $ 7,985
Schedule of change in carrying amount of goodwill

 

           
  Balance as of July 31, 2012   $ 196,438  
  Goodwill recorded during the period     13,456  
  Effect of foreign currency exchange rates     (1,314 )
  Balance as of April 30, 2013   $ 208,580