Income Taxes (Reconciliation of Unrecognized Tax Benefits, Excluding Potential Interest and Penalties) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Beginning balance	$ 16,133	$ 14,331
Gross increases - current period tax positions	1,929	1,458
Acquisitions/disposals	0	1,942
Foreign currency exchange	37	(50)
Lapse of statute of limitations	(766)	(1,548)
Ending balance	$ 17,333	$ 16,133