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Acquisition (Details 1) - USD ($)
$ in Thousands
Dec. 02, 2017
Jun. 12, 2017
Mar. 04, 2017
Feb. 27, 2016
Business Acquisition [Line Items]        
Goodwill $ 152,881   $ 101,334 $ 73,996
EFCO Corporation        
Business Acquisition [Line Items]        
Net working capital   $ 34,156    
Property, plant and equipment   43,815    
Goodwill   57,460    
Other intangible assets   71,500    
Less: Long-term liabilities acquired, net   14,605    
Net assets acquired   $ 192,326