(LOSS) EARNINGS PER SHARE - Computation of Basic and Diluted Loss Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2020	Jun. 30, 2019
(LOSS) EARNINGS PER SHARE
Net (loss) income	$ (931)	$ (2,551)	$ 1	$ 1,501	$ (3,482)	$ 1,502
Denominator:
Denominator for basic earnings (loss) per share - weighted average shares (in shares)	8,820		8,554		8,737	8,479
Effect of dilutive securities:
Employee restricted stock and incentive stock options (in shares)			13			19
Denominator for diluted earnings (loss) per share - adjusted weighted average shares and assumed conversion (in shares)	8,820		8,567		8,737	8,498
Basic (loss) earnings per share (in dollars per share)	$ (0.11)		$ 0.00		$ (0.40)	$ 0.18
Diluted (loss) earnings per share (in dollars per share)	$ (0.11)		$ 0.00		$ (0.40)	$ 0.18
Weighted average anti-dilutive employee restricted stock and incentive stock options (in shares)	348		509		393	364