Purchased Intangible Assets and Goodwill (Changes in Purchased Intangibles Balances) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Intangible Assets [Roll Forward]
Beginning balance	$ 20,222	$ 21,200
Amortization	(1,069)	(1,069)	(1,200)
Foreign currency impact	(172)	(91)
Ending balance	$ 19,325	$ 20,222	$ 21,200