Property and Equipment - Schedule of Property and Equipment (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Property Plant And Equipment [Abstract]
Building	$ 22,981	$ 22,957
Land	6,683	6,683
Equipment and other	117,246	104,149
Property and equipment, gross	146,910	133,789
Accumulated depreciation	(86,999)	(74,051)
Property and equipment, net	$ 59,911	$ 59,738