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Acquisitions - Narrative (Details)
CAD in Millions, $ in Millions
 3 Months Ended 7 Months Ended 12 Months Ended
Jun. 02, 2017
USD ($)
Jun. 03, 2016
CAD
facility
Jun. 03, 2016
USD ($)
facility
Mar. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Dec. 31, 2017
USD ($)
Dec. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
Business Acquisition [Line Items]                
Acquisition related costs           $ 1.7 $ 0.9  
Payments to acquire business, net           269.2 102.6 $ 0.0
Joe Johnson Equipment | Manufacturing Facility [Member]                
Business Acquisition [Line Items]                
Lessee Leasing Arrangements, Operating Leases, Number of Units | facility   2 2          
Lessee Leasing Arrangements, Operating Leases, Term of Contract   5 years 5 years          
Payments for Rent           0.4 0.2  
Ingenieria Y Servicios Orbitec SPA [Member]                
Business Acquisition [Line Items]                
Revenue from Related Parties           0.7 1.7  
TBEI                
Business Acquisition [Line Items]                
Purchase price, inclusive of working capital adjustment $ 271.8              
Business Acquisition, Percentage of Voting Interests Acquired 100.00%              
TBEI | Environmental Solutions                
Business Acquisition [Line Items]                
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual         $ 109.4      
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual         $ 6.2      
Joe Johnson Equipment                
Business Acquisition [Line Items]                
Purchase price, inclusive of working capital adjustment [1]     $ 96.6          
Expense recognized relating to change in fair value of contingent consideration liability [2]           0.8 0.4  
Acquisition deferred payment   CAD 8.0 6.4          
Acquisition contingent earn-out   CAD 10.0 $ 8.0          
Expenses recognized in relation to accretion of discount on deferred payment obligation           $ 0.2 $ 0.1  
Subsequent Event | TBEI                
Business Acquisition [Line Items]                
Other Payments to Acquire Businesses       $ 3.0        
[1] The initial purchase price was funded with existing cash on hand and borrowings under the Company’s revolving credit facility.
[2] Changes in the fair value of contingent consideration liabilities are included as a component of Acquisition and integration-related expenses within the Consolidated Statements of Operations.