(Loss) Income from Discontinued Operations Amounts as Reported on Consolidated Statements of Operations (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net revenue		$ 255		$ 2,509
(Loss) income from operations before income taxes	$ (1,121)	2	$ (1,587)	28
(Loss) income from operations of discontinued operations	$ (1,121)	$ 2	$ (1,587)	$ 28