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BUSINESS ACQUISITIONS (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Sep. 01, 2015
Apr. 01, 2015
Mar. 31, 2016
Dec. 31, 2016
Dec. 31, 2015
Apr. 02, 2015
Dec. 31, 2014
Business Acquisition [Line Items]              
Goodwill acquired       $ 187,591 $ 197,362   $ 253,312
Goodwill adjustment       (151)      
Business Acquired during 2015 [Member]              
Business Acquisition [Line Items]              
Sales from business acquisitions       25,200      
Earnings (loss) before taxes and impairment from business acquisitions       $ (300)      
Tool Supply, Inc. [Member]              
Business Acquisition [Line Items]              
Purchase price   $ 5,000          
Intangible assets acquired           $ 2,000  
Goodwill acquired           $ 2,900  
Cortech Engineering, LLC [Member]              
Business Acquisition [Line Items]              
Purchase price $ 14,900            
Purchase price financed under common stock issued $ 4,400            
Number of shares issued on acquisition (in shares) 148,800            
Intangible assets acquired $ 5,200            
Goodwill acquired     $ 8,700        
Goodwill adjustment     $ 151        
Nontax deductible goodwill or intangible assets $ 4,500