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Acquisition Preliminary (Details) - USD ($)
$ in Thousands
Sep. 30, 2018
Feb. 01, 2018
Dec. 31, 2017
Business Acquisition [Line Items]      
Goodwill $ 173,641   $ 80,757
WoodSpring      
Business Acquisition [Line Items]      
Cash   $ 250  
Accounts receivables   1,258  
Prepaid   23  
Contract assets   115,000  
Tradename   22,000  
Goodwill   93,384  
Accounts payable   (348)  
Total Consideration   $ 231,567