Other Liabilities - Other Liabilities (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Other Liabilities Disclosure [Abstract]
Deferred compensation	$ 18,583	$ 15,875
Lease incentives	35,670	33,209
Deferred rent benefit	36,627	34,596
Deferred revenue - long term	13,251	13,739
Other	14,262	18,005
Total other liabilities	$ 118,393	$ 115,424