Details of Certain Balance Sheet Accounts - Other Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Details Of Certain Balance Sheet Accounts [Abstract]
Workers compensation deposits	$ 300	$ 300
Health insurance deposits	1,200	1,200
Other miscellaneous deposit	1,500	700
Deferred financing fees	3,400	2,800
Investments	25,700	23,800
Other	4,100	4,400
Other assets, net	$ 36,172	$ 33,161