Restructuring (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013 Facility
Restructuring activities [Abstract]
Beginning balance	$ 222
Charges to expense	3,856
Payments	(2,064)
Ending balance	2,014
Number of facilities	3
Employee Termination Costs [Member]
Restructuring activities [Abstract]
Beginning balance	219
Charges to expense	1,943
Payments	(1,457)
Ending balance	705
Contract Exit Costs [Member]
Restructuring activities [Abstract]
Beginning balance	3
Charges to expense	1,913
Payments	(607)
Ending balance	$ 1,309