Interest Expense and Other Income (Expense) (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Components of Other Income (Expense)
Other income (expense)	$ 336	$ (899)	$ 685	$ (738)
CSV income (expense) [Member]
Components of Other Income (Expense)
Other income (expense)	274	(671)	509	(512)
Foreign Exchange Income (Expense) [Member]
Components of Other Income (Expense)
Other income (expense)	17	(253)	48	(208)
Other - Net [Member]
Components of Other Income (Expense)
Other income (expense)	$ 45	$ 25	$ 128	$ (18)