Quarterly report pursuant to Section 13 or 15(d)

FAIR VALUE OF FINANCIAL INSTRUMENTS (Narrative) (Details)

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FAIR VALUE OF FINANCIAL INSTRUMENTS (Narrative) (Details) - USD ($)
 3 Months Ended 6 Months Ended 9 Months Ended 12 Months Ended
Apr. 04, 2015
Jul. 04, 2015
Sep. 30, 2016
Dec. 31, 2015
Nov. 21, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Intangible Assets, (Excluding Goodwill), Including Deferred Charges     $ 20,708,000 $ 21,001,000  
Palmer of Texas [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Fair Value, Measurement with Unobservable Inputs Reconciliations, Recurring Basis, Liability Value $ 0        
Change in fair value of contingent consideration liability $ 2,483,000        
Specialty Pipe And Tube, Inc. [Member]          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Business Acquisition, Contingent Consideration, Estimated Revenues Year 1         $ 28,800,000
Specialty Pipe And Tube, Inc. [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Fair Value, Measurement with Unobservable Inputs Reconciliations, Recurring Basis, Liability Value     $ 0 0  
Change in fair value of contingent consideration liability   $ 2,419,000   2,414,000  
Term Loan [Member] | Interest Rate Swap [Member] | Fair Value, Inputs, Level 2 [Member]          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Variable rate basis on interest rate swap     LIBOR    
Term Loan [Member] | Palmer of Texas [Member] | Interest Rate Swap [Member] | Fair Value, Inputs, Level 2 [Member]          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Fair value of interest rate swap, liability     $ 232,000 40,000  
Term Loan [Member] | Color Resources, LLC [Member] | Interest Rate Swap [Member] | Fair Value, Inputs, Level 2 [Member]          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Fair value of interest rate swap, liability     $ 0 $ 206,000