Income Taxes (Income Tax Expense (Benefit) in the Consolidated Statements of Income) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Current
Domestic	$ 3,651	$ 2,173	$ 8,032
International	8,118	12,070	6,199
Total	11,769	14,243	14,231
Deferred
Domestic	(59,414)	(828)	(9,528)
International	1,161	(1,897)	1,147
Total	(58,253)	(2,725)	(8,381)
Domestic	(55,763)	1,345	(1,496)
International	9,279	10,173	7,346
Total	$ (46,484)	$ 11,518	$ 5,850