Net Income (Loss) Per Common Share - Calculation of Basic and Diluted Income (Loss) Per Common Share and Common Share Equivalents (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Basic net income (loss) per common share
Net income (loss)	$ 772	$ (1,441)
Less: Preferred stock dividends		(7)
Net income (loss) available to common stockholders	$ 772	$ (1,448)
Basic weighted average number of common shares outstanding	10,943	10,803
Basic net income (loss) per common share	$ 0.07	$ (0.13)
Diluted income (loss) per common share
Net income (loss) applicable to common stock	$ 772	$ (1,448)
Add: Preferred stock dividends		7
Net income (loss) applicable to dilutive common stock	$ 772	$ (1,441)
Basic weighted average number of common shares outstanding	10,943	10,803
Effect of dilutive securities
Dilutive stock awards	1,344
Diluted weighted average number of common shares outstanding	12,287	10,803
Diluted net income (loss) per common share	$ 0.06	$ (0.13)