Goodwill and Other Intangible Assets Acquired (Details) - Intangible Assets (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 25, 2012 Years	Dec. 25, 2011 Years
Finite and Indefinite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 77,428	$ 77,396
Accumulated amortization	(71,373)	(69,952)
Amortized other intangible assets, net	6,055	7,444
Trade names	9,843	9,841
Other intangible assets acquired	15,898	17,285
Content [Member]
Finite and Indefinite-Lived Intangible Assets [Line Items]
Gross carrying amount	21,384	21,384
Accumulated amortization	(18,783)	(18,133)
Amortized other intangible assets, net	2,601	3,251
Weighted average useful life (years)	1	1
Customer Lists [Member]
Finite and Indefinite-Lived Intangible Assets [Line Items]
Gross carrying amount	23,361	23,355
Accumulated amortization	(21,190)	(20,796)
Amortized other intangible assets, net	2,171	2,559
Weighted average useful life (years)	2	2
Other Intangible Assets [Member]
Finite and Indefinite-Lived Intangible Assets [Line Items]
Gross carrying amount	32,683	32,657
Accumulated amortization	(31,400)	(31,023)
Amortized other intangible assets, net	$ 1,283	$ 1,634
Weighted average useful life (years)	5	4