Annual report pursuant to Section 13 and 15(d)

Related Parties (Details)

v2.4.0.6
Related Parties (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Related Parties [Abstract]      
Jet services transactions $ 1.1 $ 0.9 $ 0.1