Commitments and Contingencies (Aircraft Commitments) (Details) (M&B Conversions Limited and Israel Areospace Industries Ltd. [Member], Boeing 767-300 [Member], Capital Addition Purchase Commitments [Member], USD $) In Millions, unless otherwise specified	1 Months Ended
	Aug. 31, 2010	Jun. 30, 2013 aircrafts
Long-term Purchase Commitment [Line Items]
Agreement time period	10 years
Number of completed aircraft conversions (in aircrafts)		5
Number of in progress aircraft conversions (in aircrafts)		2
Agreement cancellation fee		$ 9.8
Maximum [Member]
Long-term Purchase Commitment [Line Items]
Number of aircrafts to be converted	10