Facility Consolidation Charges - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 25, 2012	Mar. 27, 2011
Unusual or Infrequent Item [Line Items]
Asset impairment charges, pre-tax	$ 4,788,000	$ 7,656,000
Publishing | Operations | Property Plant and Equipment
Unusual or Infrequent Item [Line Items]
Asset impairment charges, pre-tax	4,800,000	7,700,000
Asset impairment charges, after-tax	$ 2,900,000	$ 4,600,000
Asset impairment charges, per share	$ 0.01	$ 0.02