Management Actions (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended	12 Months Ended
	Sep. 30, 2013	Dec. 31, 2012
Severence and Related Costs - 2012 Action
Reconciliation of restructuring liability
Balance, beginning of period	$ 373
Restructuring action		760
Cash payments	(310)	(414)
Foreign currency adjustments	(2)	27
Balance, end of period	61	373
Severance and Related Costs - 2013 Action
Reconciliation of restructuring liability
Restructuring action	1,440
Cash payments	(971)
Foreign currency adjustments	32
Balance, end of period	$ 501