Schedule of Future Minimum Obligations Under Lease Commitments (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013
Commitments and Contingencies Disclosure [Line Items]
Future minimum capital lease obligations - 2014	$ 294
Future minimum capital lease obligations - 2015	294
Future minimum capital lease obligations - 2016	294
Future minimum capital lease obligations - 2017	294
Future minimum capital lease obligations - 2018	294
Future minimum capital lease obligations - Thereafter	321
Total future minimum capital lease obligations	1,791	[1]
Future minimum operating lease obligations - 2014	103,927
Future minimum operating lease obligations - 2015	89,387
Future minimum operating lease obligations - 2016	82,389
Future minimum operating lease obligations - 2017	60,941
Future minimum operating lease obligations - 2018	44,294
Future minimum operating lease obligations - Thereafter	163,544
Total future minimum operating lease obligations	$ 544,482

[1] Includes $0.4 million of imputed interest.