Income Taxes Components of Income (Loss) Before Income Tax (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Schedule Of Income Before Income Tax [Line Items]
Income Before Income Tax Expense From Continuing Operations Net Of Noncontrolling Interest	$ 155,630	[1]	$ 118,556	[1]	$ 59,797	[1]
United States [Member]
Schedule Of Income Before Income Tax [Line Items]
Income Before Income Tax Expense From Continuing Operations Net Of Noncontrolling Interest	124,747		89,821		45,226
Non U S [Member]
Schedule Of Income Before Income Tax [Line Items]
Income Before Income Tax Expense From Continuing Operations Net Of Noncontrolling Interest	$ 30,883		$ 28,735		$ 14,571

[1] (a)From continuing operations, net of Noncontrolling Interest from continuing operations.