Other Assets

3 Months Ended

Mar. 31, 2013

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

Other Assets

Other Assets

The following table describes the principal components of other assets on our consolidated balance sheet as of:

	December 31, 2012		March 31, 2013
Debt investments	$	40,388	$	—
Deferred debt issuance costs, net of amortization of $54,146 and $56,609, respectively	55,087		53,065
Deferred federal income tax asset	22,207		21,954
Lease incentives and lease premiums, net of amortization of $26,902 and $29,250, respectively	62,822		60,716
Flight equipment held for sale	—		18,650
Other assets	6,260		14,988
Total other assets	$	186,764	$	169,373