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Acquisitions (Narrative) (Details) (USD $)
 3 Months Ended 9 Months Ended 1 Months Ended 3 Months Ended 9 Months Ended 3 Months Ended 9 Months Ended 0 Months Ended 3 Months Ended 9 Months Ended
Mar. 31, 2012
Mar. 31, 2011
Mar. 31, 2012
Mar. 31, 2011
Oct. 31, 2011
System Solutions Australia Pty Limited (MessageManager) [Member]
Mar. 31, 2012
System Solutions Australia Pty Limited (MessageManager) [Member]
Mar. 31, 2012
System Solutions Australia Pty Limited (MessageManager) [Member]
Mar. 31, 2012
Operitel Corporation [Member]
Mar. 31, 2012
Operitel Corporation [Member]
Sep. 01, 2011
Operitel Corporation [Member]
Jul. 13, 2011
Global 360 Holding Corporation [Member]
Mar. 31, 2012
Global 360 Holding Corporation [Member]
Mar. 31, 2012
Global 360 Holding Corporation [Member]
Business Acquisition [Line Items]                          
Total consideration paid         $ 3,300,000         $ 7,200,000 $ 256,597,000    
Cash consideration paid         2,900,000         6,400,000 256,597,000    
Cash acquired from acquisition         1,200,000           10,944,000    
Unpaid consideration, held back         400,000         800,000      
Amount held in escrow                   400,000   20,000,000 20,000,000
Acquisition related costs 1,439,000 1,248,000 3,335,000 2,376,000   0 60,000 0 90,000     0 924,000
Fair value of current assets, accounts receivable acquired                     11,900,000    
Acquired accounts receivable, gross amount receivable                     12,800,000    
Acquired accounts receivable, expected to be uncollectible                       $ 900,000 $ 900,000