SIGNIFICANT ACCOUNTING POLICIES - PP&E, Intangibles (Details) (USD $)	3 Months Ended
	Mar. 29, 2015	Mar. 30, 2014
Property, plant and equipment
Acquisition of a new production facility in cash	$ 0	$ 6,500,000
Accelerated depreciation incurred	0	13,500,000
Depreciation expense	11,523,000	25,982,000
Assets held for sale
Impairment charge of assets held for sale		900,000
Intangible assets subject to amortization, gross
Balance at the beginning of the period	833,254,000
Balance at the end of the period	833,254,000
Accumulated amortization
Balance at the beginning of the period	(615,378,000)
Amortization Expense	(12,140,000)	(14,313,000)
Balance at the end of the period	(627,518,000)
Intangible assets subject to amortization, net
Balance at the beginning of the period	217,876,000
Amortization Expense	(12,140,000)	(14,313,000)
Balance at the end of the period	205,736,000
Mastheads
Balance at the beginning of the period	193,039,000
Balance at the end of the period	193,039,000
Goodwill
Balance at the beginning of the period	996,115,000
Balance at the end of the period	996,115,000
Total
Balance at the beginning of the period	1,407,030,000
Amortization Expense	(12,140,000)	(14,313,000)
Balance at the end of the period	1,394,890,000
Amortization expense	12,140,000	14,313,000
Estimated amortization expense
2015 (remainder)	36,236,000
2016	47,986,000
2017	48,907,000
2018	47,275,000
2019	23,769,000
2020	$ 418,000