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Income Taxes - Income Tax Reconciliation (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Income Tax Reconciliation [Line Items]      
Statutory tax expense (benefit) $ 41,099 $ 57,537 $ (839)
Change in valuation allowance 1,609 (32,315) (6,631)
Foreign tax rate differential (14,397) (11,001) 4,043
U.S. taxed foreign income 8,320 8,542 3,265
Foreign Taxes on Undistributed Earnings 2,328 2,182 0
Goodwill impairment 0 0 27,647
FCPA provision, nondeductible portion 2,399 [1] 1,160 [1] 0 [1]
Other 3,971 [1] 2,593 [1] 6,614 [1]
Taxes on income 29,905 12,815 14,561
Brazil
     
Income Tax Reconciliation [Line Items]      
Brazil nontaxable incentive (10,622) (10,652) (14,600)
Brazil tax goodwill amortization $ (4,802) $ (5,231) $ (4,938)
[1] Other consists of