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Business Combination (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Jan. 02, 2019
Dec. 31, 2018
Business Acquisition [Line Items]        
Goodwill $ 156,243     $ 145,909
Intangible assets     $ 5,131  
Merger expenses $ 7,562    
GHB acquisition [Member]        
Business Acquisition [Line Items]        
Common stock received $ 0.245      
Goodwill $ 10,300      
Intangible assets 5,100      
Merger expenses $ 7,600