Goodwill and Other Intangible Assets Acquired - Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 25, 2011	Dec. 26, 2010
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 78,953	$ 90,418
Accumulated amortization	(71,223)	(69,383)
Amortized other intangible assets, net	7,730	21,035
Trade names	9,885	14,380
Other intangible assets acquired (less accumulated amortization of $71,223 in 2011 and $69,383 in 2010)	17,615	35,415
Content [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	21,384	25,712
Accumulated amortization	(18,133)	(16,510)
Amortized other intangible assets, net	3,251	9,202
Weighted average useful life (years)	1	7
Customer Lists [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	24,495	28,316
Accumulated amortization	(21,842)	(21,281)
Amortized other intangible assets, net	2,653	7,035
Weighted average useful life (years)	2	6
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	33,074	36,390
Accumulated amortization	(31,248)	(31,592)
Amortized other intangible assets, net	$ 1,826	$ 4,798
Weighted average useful life (years)	4	3