Quarterly report pursuant to Section 13 or 15(d)

Acquisitions (Details)

v3.3.0.814
Acquisitions (Details) - USD ($)
$ in Millions
Jul. 08, 2015
Apr. 27, 2015
Jul. 31, 2014
Jun. 16, 2014
SCIFIT [Member]        
Business Acquisition [Line Items]        
Business Acquisition, Percentage of Voting Interests Acquired 100.00%      
Net cash consideration paid to acquire business $ 10.4      
Goodwill, Acquired During Period 3.2      
Fair value of identifiable intangible assets acquired 5.8      
SCIFIT [Member] | Trade names [Member]        
Business Acquisition [Line Items]        
Indefinite-lived Intangible Assets Acquired 2.7      
SCIFIT [Member] | Customer relationships [Member]        
Business Acquisition [Line Items]        
Finite-lived Intangible Assets Acquired $ 2.7      
Acquired finite-lived intangible assets, weighted average useful life 7 years      
SCIFIT [Member] | Patents and proprietary technology [Member]        
Business Acquisition [Line Items]        
Finite-lived Intangible Assets Acquired $ 0.4      
Acquired finite-lived intangible assets, weighted average useful life 5 years      
BLA [Member]        
Business Acquisition [Line Items]        
Business Acquisition, Percentage of Voting Interests Acquired   100.00%    
Net cash consideration paid to acquire business   $ 8.3    
BLA [Member] | Trade names [Member]        
Business Acquisition [Line Items]        
Indefinite-lived Intangible Assets Acquired   0.8    
BLA [Member] | Customer relationships [Member]        
Business Acquisition [Line Items]        
Finite-lived Intangible Assets Acquired   $ 0.6    
Acquired finite-lived intangible assets, weighted average useful life   7 years    
Bell [Member]        
Business Acquisition [Line Items]        
Business Acquisition, Percentage of Voting Interests Acquired     100.00%  
Net cash consideration paid to acquire business     $ 11.9  
Goodwill, Acquired During Period     0.9  
Bell [Member] | Customer relationships [Member]        
Business Acquisition [Line Items]        
Finite-lived Intangible Assets Acquired     $ 2.0  
Acquired finite-lived intangible assets, weighted average useful life     8 years  
Whale [Member]        
Business Acquisition [Line Items]        
Business Acquisition, Percentage of Voting Interests Acquired       100.00%
Net cash consideration paid to acquire business       $ 29.6
Goodwill, Acquired During Period       7.9
Payments to retire acquiree debt       10.0
Fair value of identifiable intangible assets acquired       11.9
Whale [Member] | Trade names [Member]        
Business Acquisition [Line Items]        
Indefinite-lived Intangible Assets Acquired       3.7
Whale [Member] | Customer relationships [Member]        
Business Acquisition [Line Items]        
Finite-lived Intangible Assets Acquired       $ 6.1
Acquired finite-lived intangible assets, weighted average useful life       14 years
Whale [Member] | Patents and proprietary technology [Member]        
Business Acquisition [Line Items]        
Finite-lived Intangible Assets Acquired       $ 2.1
Acquired finite-lived intangible assets, weighted average useful life       5 years