Restructuring - Restructuring Reserve (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended	12 Months Ended
	Sep. 30, 2013	Dec. 31, 2013
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	$ 0	$ 0
Accruals		675
Payments		(671)
Restructuring reserve, ending balance		4
Employee severance costs [Member]
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	0	0
Accruals	663
Payments		(659)
Restructuring reserve, ending balance		4
Other restructuring charges [Member]
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	0	0
Accruals	12
Payments	12
Restructuring reserve, ending balance		$ 0