Leases - Future Minimum Lease Payments Under Non-Cancellable Leases (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013
Leases [Abstract]
Future minimum operating lease payments, 2014	$ 10,680
Future minimum operating lease payments, 2015	7,597
Future minimum operating lease payments, 2016	6,253
Future minimum operating lease payments, 2017	5,300
Future minimum operating lease payments, 2018	4,976
Future minimum operating lease payments, later years	32,488
Total minimum operating lease payments	67,294
Future minimum capital lease payments, 2014	239
Future minimum capital lease payments, 2015	169
Future minimum capital lease payments, 2016	141
Future minimum capital lease payments, 2017	45
Future minimum capital lease payments, 2018
Future minimum capital lease payments, later years
Total minimum capital lease payments	594
Less amounts representing interest	(38)
Present value of net minimum lease payments (including $219 currently payable)	$ 556