Restructuring Reserve Roll-Forward (Details) (Headcount Reductions and Vacating Leased Facilities, Fourth Quarter 2010 Restructuring Plan, USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Restructuring Reserve [Roll Forward]
Balance at Beginning of Period	$ 971,000		$ 7,967,000
Payments	(411,000)	(9,900,000)	(7,407,000)	(25,900,000)
Balance at End of Period	560,000		560,000
Production and Distribution Expenses, Selling and Support Expenses, General and Adminstrative Expenses
Restructuring Charges [Abstract]
Restructuring Charges		$ 4,500,000		$ 19,200,000