Quarterly report pursuant to Section 13 or 15(d)

Preliminary Values Assigned to Assets Acquired and Liabilities Assumed (Detail)

v3.5.0.2
Preliminary Values Assigned to Assets Acquired and Liabilities Assumed (Detail) - USD ($)
$ in Thousands
Jun. 30, 2016
May 31, 2016
Dec. 31, 2015
Aug. 05, 2015
Business Acquisition [Line Items]        
Goodwill $ 70,575   $ 64,267  
Energy Source        
Business Acquisition [Line Items]        
Working capital, net       $ 1,458
Goodwill       21,276
Intangible Assets       8,768
Purchase price       $ 31,502
TNT        
Business Acquisition [Line Items]        
Working capital, net   $ 2,576    
Goodwill   6,256    
Intangible Assets   5,921    
Purchase price   $ 14,753