IDENTIFIED INTANGIBLE ASSETS (Schedule of Intangible Assets) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 25, 2016	Dec. 27, 2015
Finite-Lived Intangible Assets [Line Items]
Identified intangible assets subject to amortization, accumulated amortization	$ (79,261)	$ (70,401)
Total identified intangible assets, original cost	117,854	117,854
Total identified intangible assets, carrying amount	38,593	47,453
Trade names [Member]
Indefinite-lived Intangible Assets [Line Items]
Identified intangible assets not subject to amortization, original cost and carrying amount	9,700	9,700
Trade names [Member]
Finite-Lived Intangible Assets [Line Items]
Identified intangible assets subject to amortization, original cost	40,143	40,143
Identified intangible assets subject to amortization, accumulated amortization	(36,537)	(34,718)
Identified intangible assets subject to amortization, carrying amount	$ 3,606	$ 5,425
Trade names [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Identified intangible assets subject to amortization, useful life	3 years	3 years
Trade names [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Identified intangible assets subject to amortization, useful life	15 years	15 years
Customer relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Identified intangible assets subject to amortization, useful life	13 years	13 years
Identified intangible assets subject to amortization, original cost	$ 67,711	$ 67,711
Identified intangible assets subject to amortization, accumulated amortization	(42,424)	(35,383)
Identified intangible assets subject to amortization, carrying amount	$ 25,287	$ 32,328
Non-compete agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Identified intangible assets subject to amortization, useful life	3 years	3 years
Identified intangible assets subject to amortization, original cost	$ 300	$ 300
Identified intangible assets subject to amortization, accumulated amortization	(300)	(300)
Identified intangible assets subject to amortization, carrying amount	$ 0	$ 0
Non-compete agreements [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Identified intangible assets subject to amortization, useful life	3 years
Non-compete agreements [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Identified intangible assets subject to amortization, useful life	15 years