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Acquisitions (Narrative) (Details) (USD $)
 0 Months Ended 12 Months Ended
Apr. 15, 2011
Jun. 30, 2011
Jun. 30, 2010
Percentage of company equity acquired 100.00%    
Name of company acquisition CDC Brasil S.A.    
Initial payment for cash share purchase   $ 36,200,000  
Preliminary fair value of the contingent consideration   23,952,000  
Undiscounted contingent consideration payments, minimum   2,400,000  
Undiscounted contingent consideration payments, maximum   52,100,000  
Liability for contingent consideration, current and non-current   23,794,000  
Liability for contingent consideration, current   2,398,000  
Liability for contingent consideration, non-current   21,396,000  
Revenue contributed by CDC   29,600,000  
Change in fair value of the contingent consideration recognized in the consolidated financial statements   200,000  
Estimated indemnification contingent liabilities   14,100,000  
Cash paid to escrow   27,400,000  
Undiscounted range of indemnification assets and contingent liabilities, minimum   5,100,000  
Undiscounted range of indemnification assets and contingent liabilities, maximum   22,900,000  
Net income contributed by CDC   700,000  
Business combination, acquisition related costs   1,100,000  
Incremental amortization expense   700,000  
Weighted average amortization period   6  
CDC Brasil S.A [Member]
      
Initial payment for cash share purchase 36,228,000    
Preliminary fair value of the contingent consideration 23,952,000    
Business combination, acquisition related costs   $ 100,000