Schedule of Net Revenues and Operating Results (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Discontinued Operation, Additional Disclosures [Abstract]
Net revenues	$ 0	$ (300)	$ 31,200
(Loss) before income taxes	0	(300)	(5,300)
Income tax benefit	0	100	2,200
Discontinued operations, net of tax	$ 0	$ (216)	$ (3,073)