Annual report pursuant to Section 13 and 15(d)

Acquisitions (Details)

v3.8.0.1
Acquisitions (Details)
$ in Thousands
 1 Months Ended 3 Months Ended 12 Months Ended
Jul. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
Jan. 28, 2015
USD ($)
business
May 31, 2016
USD ($)
Sep. 30, 2015
USD ($)
Dec. 31, 2017
USD ($)
Dec. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
Business Acquisition [Line Items]                
Goodwill   $ 198,545       $ 198,622 $ 198,622 $ 198,545
Earn-out obligation payments           $ 0 18,515 11,713
Ultra Seating                
Business Acquisition [Line Items]                
Initial purchase consideration paid   3,600            
Cash consideration   $ 3,800            
Goodwill             2,000  
Ultra Seating | Customer Relationships                
Business Acquisition [Line Items]                
Acquired intangible assets             $ 1,500  
Aviation                
Business Acquisition [Line Items]                
Initial purchase consideration paid     $ 189,000          
Cash consideration         $ 2,400      
Number of businesses acquired | business     4          
Estimated net working capital adjustment     $ 5,000          
Additional potential consideration payment - two year earn-out     $ 40,000          
Additional potential consideration payment - one year earn-out         $ 5,000      
Payments of contingent liabilities       $ 8,000        
Earn-out obligation payments $ 10,500              
Acquisition-related expenses               $ 528