Restructuring Costs Schedule of the components of our restructuring costs incurred (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended	13 Months Ended
	Sep. 30, 2012	Sep. 30, 2012	Sep. 30, 2012
Restructuring Cost and Reserve [Line Items]
Costs incurred related to restructuring	$ 3,003	$ 12,782	$ 5,434
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Costs incurred related to restructuring	1,753	5,821	2,200
Property and Equipment Impairments [Member]
Restructuring Cost and Reserve [Line Items]
Costs incurred related to restructuring	137	2,388	649
Facility Closure Costs [Member]
Restructuring Cost and Reserve [Line Items]
Costs incurred related to restructuring	$ 1,113	$ 4,573	$ 2,585