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

General (The Company) (Narrative) (Details)

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General (The Company) (Narrative) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2011
Dec. 31, 2010
General [Abstract]    
Total assets $ 9,107,632 $ 9,600,607
Number of aircraft owned 251