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FAIR VALUE OF FINANCIAL INSTRUMENTS (Narrative) (Details) (USD $) In Thousands, unless otherwise specified | 9 Months Ended |  |
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Sep. 28, 2013 Fair Value, Inputs, Level 3 [Member] | Sep. 28, 2013 Interest Rate Swap [Member] | Sep. 28, 2013 Interest Rate Swap [Member] Fair Value, Inputs, Level 2 [Member] | Dec. 29, 2012 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, asset |  |  | $ 152 |
Fair value of interest rate swap, liability |  |  | $ 145 | $ 450
Variable rate basis on interest rate swap |  | LIBOR |  |
Contingent consideration earn-out period (years) | 3 years |  |  |

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