STOCKHOLDERS' EQUITY - Summary of Warrants and Options Issued to Employees and Directors (Detail) - Employee Stock Options And Warrants [Member] - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Balance at beginning of year	970,847	998,432	1,030,807
Exercised, Number of Warrants and Options	(2,333)	(1,334)	(129,265)
Expired, Number of Warrants and Options	(1,833)	(26,251)	(1,000)
Granted, Number of Warrants and Options			97,890
Balance at end of year	966,681	970,847	998,432	1,030,807
Exercisable, Number of Warrants and Options	966,681	853,460	673,473
Balance at beginning of year	$ 6.32	$ 6.34	$ 6.39
Exercised, Weighted Average Exercise Price	5.46	5.28	7.35
Expired, Weighted Average Exercise Price	5.40	7.27	5.14
Granted, Weighted Average Exercise Price			7.11
Balance at end of year	6.32	6.32	6.34	$ 6.39
Exercisable, Weighted Average Exercise Price	$ 6.32	$ 6.35	$ 6.41
Weighted Average Remaining Contract Life Outstanding	5 years 6 months 18 days	6 years 6 months 14 days	7 years 6 months 29 days	8 years 2 months 8 days
Exercisable, Weighted Average Remaining Contract Life Outstanding	5 years 6 months 18 days	6 years 6 months 14 days	7 years 6 months 29 days
Aggregate Intrinsic Value Beginning Balance	$ 850	$ 1,206	$ 321
Aggregate Intrinsic Value Exercised	4	1	302
Aggregate Intrinsic Value Ending Balance	751	850	1,206	$ 321
Aggregate Intrinsic Value Exercisable	$ 751	$ 736	$ 789