Earnings (Loss) Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Earnings Per Share [Abstract]
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent	$ (4,830)	$ (15,065)
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent	(22)	(4,936)
Net Income (Loss) Attributable to Parent	$ (4,852)	$ (20,001)
Weighted average common shares outstanding used to compute basic EPS	38,272	37,994
Dilutive effect of stock based awards and Series B Preferred Stock	0	0
Weighted average common shares outstanding used to compute diluted EPS	38,272	37,994
Income (Loss) from Continuing Operations, Per Basic Share	$ (0.13)	$ (0.40)
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share	0	(0.13)
Total net loss per share - Basic	(0.13)	(0.53)
Continuing operations	(0.13)	(0.40)
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share	0	(0.13)
Total net loss per share - Diluted	$ (0.13)	$ (0.53)
Shares of common stock excluded from the calculation of diluted net income per share because of antidilutive effect	6,800	7,700