Asset Write-Downs and Other Charges and Credits - Narrative (Details) (USD $)	3 Months Ended				12 Months Ended
	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011 newspaper	Dec. 31, 2010
Asset Write-Downs and Other Charges and Credits [Abstract]
Restructuring charges					$ 9,335,000	$ 9,935,000	$ 12,678,000
Contract termination fees					5,663,000	0	0
Impairment of investments					1,400,000
Acquisition and related integration costs					5,826,000	2,787,000	0
Impairment of long-lived assets	$ 0	$ 9,000,000	$ 0	$ 0	$ 0	$ 9,000,000	$ 0
Number of long-lived assets subject to impairment						4