Other Long Term Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Other Long Term Liabilities [Line Items]
Intangible lease liability	$ 6,965	$ 7,352
Accrued workers' compensation	15,188	15,732
Accrued deferred compensation	13,253	13,036
Lease financing obligation	21,047
Other	1,856	3,356
Other liabilities	$ 58,309	$ 39,476