Net Income (Loss) per Share - Computation of Basic and Diluted Net Income (Loss) Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Net (loss) income:
Loss from continuing operations	$ (3,085)	$ (1,960)	$ (7,210)	$ (4,998)
Income (loss) from discontinued operations	646	843	(2,854)	(11)
Net loss	$ (2,439)	$ (1,117)	$ (10,064)	$ (5,009)
Weighted average shares for basic net (loss) income per share	24,580	24,511	24,555	24,501
Effect of dilutive securities		99
Weighted average shares for diluted net (loss) income per share	24,580	24,610	24,555	24,501
Net (loss) income per share -basic and diluted:
Loss from continuing operations	$ (0.13)	$ (0.08)	$ (0.29)	$ (0.20)
Income (loss) from discontinued operations	0.03	0.03	(0.12)	0.00
Basic and diluted net (loss) income per share	$ (0.10)	$ (0.05)	$ (0.41)	$ (0.20)