Commitments And Contingencies - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	1 Months Ended
	May 31, 2012	Sep. 28, 2012	Mar. 09, 2010	Jul. 01, 2004
Contingencies And Commitments [Line Items]
Kalitta Air damages, minimum		$ 235
Pre-judgment interest in Kalitta Air damages, minimum		240
Total damages sought				315
Punitive damages sought				150
Compensatory damages			6.7
Damages awarded	$ 48