INTANGIBLE ASSETS AND GOODWILL (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 24, 2017	Sep. 30, 2018	Sep. 24, 2017
Intangible assets subject to amortization, gross
Balance at the beginning of the period			$ 839,284,000
Disposition Adjustment			(785,000)
Balance at the end of the period	$ 838,499,000		838,499,000
Accumulated amortization
Balance at the beginning of the period			(761,013,000)
Disposition Adjustment			785,000
Amortization Expense	(11,895,000)	$ (12,092,000)	(35,858,000)	$ (36,268,000)
Balance at the end of the period	(796,086,000)		(796,086,000)
Intangible assets subject to amortization, net
Balance at the beginning of the period			78,271,000
Amortization Expense	(11,895,000)	(12,092,000)	(35,858,000)	(36,268,000)
Balance at the end of the period	42,413,000		42,413,000
Mastheads
Balance at the beginning of the period			149,951,000
Impairment Charges			(14,148,000)
Balance at the end of the period	135,803,000		135,803,000
Goodwill [Roll Forward]
Balance at the beginning of the period			705,174,000
Goodwill impairment charge	0	0	0	0
Balance at the end of the period	705,174,000		705,174,000
Total
Balance at the beginning of the period			933,396,000
Amortization Expense	(11,895,000)	$ (12,092,000)	(35,858,000)	$ (36,268,000)
Balance at the end of the period	$ 883,390,000		$ 883,390,000