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ACQUISITIONS AND DIVESTITURES: (Additional Acquisitions) (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2011
GEM [Member]
Nov. 30, 2011
e4e, gem, and VisionMAX [Member]
Nov. 19, 2012
GBS [Member]
Nov. 19, 2012
GBS [Member]
Business Acquisition [Line Items]        
Percentage of stock acquired 100.00%      
Purchase price   $ 43,349 $ 6,200  
Amount payable upon completion of certain post-closing conditions     1,200  
Net tangible assets acquired   10,155    
Recorded goodwill and intangibles   33,194    
Acquisition-related contingent consideration       1,300
Goodwill     $ 6,027