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Commitments and Contingencies - Narrative (Details) - USD ($)
$ in Thousands
Jul. 29, 2018
Jan. 28, 2018
Jul. 01, 2017
Commitments and Contingencies [Line Items]      
Earn-out liability booked $ 26,200 $ 26,520  
Amount expected to be settled within twelve months 11,687    
Cycleo      
Commitments and Contingencies [Line Items]      
Potential payments under earn-out arrangements, high estimate 16,000    
Earn-out liability booked 6,100 5,520  
Amount expected to be settled within twelve months 2,187    
AptoVision Technologies Inc.      
Commitments and Contingencies [Line Items]      
Earn-out liability booked 20,100 $ 21,000  
Amount expected to be settled within twelve months 9,500    
Minimum [Member] | Environmental Issue      
Commitments and Contingencies [Line Items]      
Loss contingency, estimate of possible loss 3,600    
Maximum [Member] | AptoVision Technologies Inc.      
Commitments and Contingencies [Line Items]      
Potential payments under earn-out arrangements, high estimate     $ 47,000
Maximum [Member] | Environmental Issue      
Commitments and Contingencies [Line Items]      
Loss contingency, estimate of possible loss $ 7,200