Other Income (Expense) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Other income (expense)	$ (2)	$ 162	$ (304)	$ 180
Distribution in excess of carrying value	0	0	3,058	0
Foreign currency gain (loss)	1,735	(575)	(1,205)	(1,420)
Loss on sale of assets	0	(19)	0	(1)
Other income (expense), net	$ 1,733	$ (432)	$ 1,549	$ (1,241)