Income Taxes Schedule of Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized Tax Benefits,Beginning	$ 12,339	$ 17,335	$ 18,432
Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions	1,866	711	1,795
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions	4,106	956	1,015
Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities	(3,134)	(2,620)	(179)
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions	(1,163)	(3,590)	(2)
Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations	(1,314)	(449)	(3,699)
Unrecognized Tax Benefits Adjustments Due To Foreign Exchange Rate Movement	43	(4)	(27)
Unrecognized Tax Benefits, Ending	$ 12,743	$ 12,339	$ 17,335