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GOODWILL AND OTHER INTANGIBLE ASSETS, Goodwill balance by reportable segment (Details)
$ in Thousands
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2015
USD ($)
Dec. 31, 2014
USD ($)
Sep. 30, 2015
USD ($)
ReportingUnit
Sep. 30, 2015
USD ($)
Jan. 02, 2014
USD ($)
Goodwill [Line Items]          
Number of reporting units | ReportingUnit     8    
Amount of aggregate goodwill $ 206,860 $ 253,312 $ 206,860 $ 206,860  
Goodwill impairment     57,816 [1] 175,400  
Reportable Segment [Member]          
Goodwill [Line Items]          
Amount of aggregate goodwill   180,300      
B27, LLC [Member]          
Goodwill [Line Items]          
Amount of aggregate goodwill         $ 178,300
Goodwill impairment 57,800 105,300      
Service Centers [Member]          
Goodwill [Line Items]          
Amount of aggregate goodwill 168,862 167,302 168,862 168,862  
Service Centers [Member] | B27, LLC [Member]          
Goodwill [Line Items]          
Amount of aggregate goodwill 10,300 73,000 10,300 10,300  
Goodwill impairment     9,800    
Innovative Pumping Solutions [Member]          
Goodwill [Line Items]          
Amount of aggregate goodwill 20,860 68,872 20,860 20,860  
Innovative Pumping Solutions [Member] | B27, LLC [Member]          
Goodwill [Line Items]          
Amount of aggregate goodwill 4,900 73,000 4,900 4,900  
Goodwill impairment     48,000    
Supply Chain Services [Member]          
Goodwill [Line Items]          
Amount of aggregate goodwill $ 17,138 $ 17,138 $ 17,138 $ 17,138  
[1] Impairment of goodwill associated with acquisition of B27.