Schedule of Net Revenues and Operating Results (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Discontinued Operation, Additional Disclosures [Abstract]
Net revenues	$ 31,200,000	$ 47,200,000	$ 67,300,000
(Loss) before income taxes	(5,300,000)	(5,500,000)	(13,200,000)
Income tax benefit	2,200,000	2,200,000	5,200,000
Discontinued operations, net of tax	$ (3,073,000)	$ (3,326,000)	$ (8,034,000)