Income Taxes and Uncertain Tax Positions (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2012	Dec. 31, 2011
Income Tax Expense Benefit [Abstract]
Effective Income Tax Rate, Continuing Operations			26.10%	25.70%
Effect on EPS of Uncertain Tax Position Adjustments			$ 0.12	$ 0.11
Unrecognized Tax Benefits	$ 12,426		$ 12,426			$ 12,719
Unrecognized Tax Benefits, Interest on Income Taxes Expense	164	184	(51)	59
Unrecognized Tax Benefits, Income Tax Penalties Expense	99	145	194	424
Unrecognized Tax Benefits, Interest on Income Taxes Accrued	2,175		2,175			2,268
Unrecognized Tax Benefits, Income Tax Penalties Accrued	1,463		1,463			1,298
Tax Adjustments, Settlements, and Unusual Provisions	0	36	1,072	958
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Estimated Range of Change, Lower Bound					1,700
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Estimated Range of Change, Upper Bound					$ 1,800
Internal Revenue Service (IRS) [Member]
Income Tax Examination [Line Items]
Income Tax Examination Year Under Examination			2008
Netherlands [Member]
Income Tax Examination [Line Items]
Income Tax Examination Year Under Examination			2006
United Kingdom [Member]
Income Tax Examination [Line Items]
Income Tax Examination Year Under Examination			2006
Brazil [Member]
Income Tax Examination [Line Items]
Income Tax Examination Year Under Examination			2007
Spain [Member]
Income Tax Examination [Line Items]
Income Tax Examination Year Under Examination			2007
China [Member]
Income Tax Examination [Line Items]
Income Tax Examination Year Under Examination			2009
Italy [Member]
Income Tax Examination [Line Items]
Income Tax Examination Year Under Examination			2010
State and Local Jurisdiction [Member]
Income Tax Examination [Line Items]
Income Tax Examination Year Under Examination			1993