Earnings Per Share - Computation of Basic and Diluted Earnings Per Share (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Numerator:
Net income (loss) from continuing operations	$ (146)	$ 1,953
Net loss from discontinued operations	0	(88)
Net income (loss)	$ (146)	$ 1,865
Denominator:
Common shares outstanding	18,176	17,684
Earnings per common share - basic
Net income (loss) from continuing operations	$ (0.01)	$ 0.11
Net loss from discontinued operations	$ 0.00	$ 0.00
Net income (loss)	$ (0.01)	$ 0.11
Denominator:
Common shares outstanding	18,176	17,684
Restricted shares subject to vesting		148
Common stock option grants		79
Total shares	18,176	17,911
Earnings per common share - diluted
Net income (loss) from continuing operations	$ (0.01)	$ 0.11
Net loss from discontinued operations	$ 0.00	$ 0.00
Net income (loss)	$ (0.01)	$ 0.10