Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Income Taxes (Summary Of Income Tax Expense (Benefit) By Tax Jurisdiction) (Details)

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Income Taxes (Summary Of Income Tax Expense (Benefit) By Tax Jurisdiction) (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Dec. 31, 2008
Dec. 31, 2007
Income Tax Disclosure [Line Items]          
Deferred tax expense (benefit) $ 15,940 $ 22,285 $ (568)    
Current tax expense (benefit) (480) (91) 1,521    
Income tax expense (benefit) 15,460 22,194 [1],[2],[3],[4] 953 [1],[2] (833) 17,080
The Netherlands [Member]
         
Income Tax Disclosure [Line Items]          
Deferred tax expense (benefit) 4,322 6,085 (15,959)    
Current tax expense (benefit) 1,250 673      
Ireland [Member]
         
Income Tax Disclosure [Line Items]          
Deferred tax expense (benefit) 6,668 18,446 20,711    
United States Of America [Member]
         
Income Tax Disclosure [Line Items]          
Deferred tax expense (benefit) 4,317 (2,252) (5,444)    
Current tax expense (benefit) (1,730) (764) 1,521    
Sweden [Member]
         
Income Tax Disclosure [Line Items]          
Deferred tax expense (benefit) 633 6 171    
Other [Member]
         
Income Tax Disclosure [Line Items]          
Deferred tax expense (benefit)     $ (47)    
[1] As a result of the sale of AeroTurbine and based on ASC 205-20, which governs financials statements for discontinued operations, the results of AeroTurbine have been reclassified to discontinued operations.
[2] Certain reclassifications have been made to prior years' Consolidated Income Statements to reflect the current year presentation.
[3] Includes the results of Genesis for the period from March 25, 2010 (date of acquisition) to December 31, 2010.
[4] Includes the results of Genesis Lease Limited ("Genesis") for the period from March 25, 2010 (date of acquisition) to December 31, 2010 and the issue of shares to Genesis and Waha Capital PJSC ("Waha").