INCENTIVE COMPENSATION (Narrative) (Details) (USD $) Share data in Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 24, 2012	Jun. 30, 2013	Jun. 24, 2012
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Accrued in costs related to the STIP	$ 549,000	$ 149,000	$ 1,602,000	$ 298,000
Total unrecognized compensation cost related to all nonvested awards	6,200,000		6,200,000
Weighted average period unrecognized compensation cost is expected to be recognized			1 year 5 months 23 days
Incentive Plan [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Accrued in costs related to the STIP			$ 8,500,000
Reserved shares of common stock for future issuance under the LTIP	6.6		6.6