Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Earnings from Continuing Operations before Income Taxes [Abstract]
United States	$ 118,269	$ 180,022	$ 192,219
Foreign	110,717	111,890	118,860
Earnings from continuing operations before income taxes	228,986	291,912	311,079
Current tax expense (benefit):
Federal	38,249	53,187	62,858
State	4,413	(3,075)	9,262
Foreign	13,483	21,138	24,452
Current income tax expense (benefit)	56,145	71,250	96,572
Deferred tax expense (benefit):
Federal	(252)	3,194	(5,185)
State	(335)	1,887	(993)
Foreign	(3,587)	(9,775)	(1,967)
Deferred income tax expense (benefit)	(4,174)	(4,694)	(8,145)
Total provision	$ 51,971	$ 66,556	$ 88,427