Income Taxes (Reconciliation of the Beginning and Ending Amount of Unrecognized Tax Benefits) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Taxes [Abstract]
Unrecognized tax benefits balance at January 1	$ 24,386	$ 27,053	$ 23,467
Increase in gross amounts of tax positions related to prior years	2,121	9,454	8,040
Decrease in gross amounts of tax positions related to prior years			(37)
Increase in gross amounts of tax positions related to current year	2,622	381	1,005
Decrease due to settlements with tax authorities	(16,721)	(13,099)	(4,576)
Decrease due to lapse in statute of limitations		(20)
Currency translation	130	617	(846)
Unrecognized tax benefits balance at December 31	$ 12,538	$ 24,386	$ 27,053