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Income Taxes (Components Of Income Tax Provision) (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 12 Months Ended
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Income Taxes [Abstract]                      
Current: U.S. federal                 $ 24,688 $ 441  
Current: State                 1,926 1,031 367
Current: Foreign                 3,165 3,527 1,799
Current: Total                 29,779 4,999 2,166
Deferred: U.S. federal                 (7,760) 869 (4,727)
Deferred: State                 (450) (798) (189)
Deferred: Foreign                 (1,682) (732) (224)
Deferred: Total                 (9,892) (661) (5,140)
Total income tax provision $ 5,248 $ 8,279 $ 4,791 $ 1,569 $ (1,449) $ 2,752 $ 1,935 $ 1,100 $ 19,887 $ 4,338 $ (2,974)