Commitments and Contingencies Narrative (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Loss Contingencies [Line Items]
Restructuring expenses	$ 5,813,000	$ 0	$ 7,176,000	$ 0
Restructuring reserve	3,800,000		3,800,000
Restructuring expenses, additional expected to be incurred			3,500,000
Employee Severance [Member]
Loss Contingencies [Line Items]
Restructuring expenses	5,200,000		6,600,000
Facility Closing [Member]
Loss Contingencies [Line Items]
Restructuring expenses	$ 600,000		$ 600,000