Discontinued Operations - Summary of Activity for Discontinued Operations (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Discontinued Operations and Disposal Groups [Abstract]
Revenue from discontinued operations				$ 1
Operating income (loss) before income taxes				(86)
Income tax benefit from discontinued operations				34
Gain on disposal, before income taxes	$ 0	$ 0	$ 0	0
Income tax expense on disposal	$ 0	$ 0	$ 0	0
Loss from discontinued operations				$ (52)