Share-Based Compensation - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 46	$ 45	$ 141	$ 155
Total unrecognized compensation cost related to nonvested share-based compensation arrangements granted	$ 246		$ 246
Weighted-average period over which unrecognized compensation is expected to be recognized			1 year 8 months 12 days
Common stock issued pursuant to option exercises			69,333	0
Proceeds from exercise of stock options			$ 26	$ 0
Stock options granted			461,100	568,000
Stock options forfeited			248,900	22,000
Stock options outstanding	2,583,199		2,583,199		2,440,000
Weighted average exercise price	$ 0.95		$ 0.95		$ 1.15
Common stock, shares outstanding	28,585,496		28,585,496		28,516,163
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, shares outstanding	0		0
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, shares outstanding	0		0
Stock Appreciation Rights (SARs) [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of the liability	$ 1		$ 1		$ 1