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Mergers and Acquisitions (Details)
In Millions, unless otherwise specified
1 Months Ended 1 Months Ended 1 Months Ended
Aug. 17, 2012
Gen Comm Co., Ltd ("GenComm")
USD ($)
Aug. 31, 2012
Gen Comm Co., Ltd ("GenComm")
Developed technology
Aug. 17, 2012
Gen Comm Co., Ltd ("GenComm")
Developed technology
USD ($)
Aug. 31, 2012
Gen Comm Co., Ltd ("GenComm")
Customer relationships
Aug. 17, 2012
Gen Comm Co., Ltd ("GenComm")
Customer relationships
USD ($)
Aug. 17, 2012
Gen Comm Co., Ltd ("GenComm")
Backlog
USD ($)
Dec. 24, 2012
Dyaptive Systems Inc
USD ($)
Dec. 24, 2012
Dyaptive Systems Inc
CAD
Jan. 31, 2012
Dyaptive Systems Inc
USD ($)
Jan. 31, 2012
Dyaptive Systems Inc
CAD
Jan. 31, 2012
Dyaptive Systems Inc
Developed technology
USD ($)
Jan. 31, 2012
Dyaptive Systems Inc
Customer relationships
USD ($)
Jan. 31, 2012
Dyaptive Systems Inc
Other
USD ($)
Acquisitions                          
Purchase consideration paid in cash $ 15.2               $ 14.8 14.9      
Working capital adjustment and holdback payment 3.8           2.0 2.0          
Purchase price allocation to assets acquired                          
Net tangible assets acquired 5.9               3.4        
Acquired finite-lived intangible assets     3.2   0.2 0.2         6.2 2.3 0.9
Goodwill 5.7               2.0        
Total purchase price 15.2               14.8        
Weighted-average estimated useful lives of acquired intangible assets                          
Estimated useful lives of acquired intangible assets   4 years   4 years             4 years 4 years  
Fair value of acquired tangible assets                          
Cash 1.9               4.0        
Accounts receivable 2.3               0.9        
Inventories 2.4               0.8        
Property and equipment 2.9               0.5        
Tax liabilities, net (1.7)                        
Accounts payable                 (0.2)        
Deferred revenue                 (0.3)        
Employee related liabilities (1.5)               (2.3)        
Other assets and liabilities, net (0.4)                        
Net tangible assets acquired $ 5.9               $ 3.4