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NET INCOME (LOSS) PER SHARE (Details) - USD ($) $ / shares in Units, $ 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
Net income (loss)	$ 1,500	$ 993	$ (11,246)	$ (137)	$ 2,493	$ (11,383)
Weighted average common shares outstanding:
Basic	23,339,644		23,176,934		23,313,383	23,117,571
Dilutive common stock options, restricted stock unit awards and restricted stock awards	208,609				186,726
Diluted	23,548,253		23,176,934		23,500,109	23,117,571
Basic income (loss) per share of common stock	$ 0.06		$ (0.49)		$ 0.11	$ (0.49)
Diluted income (loss) per share of common stock	$ 0.06		$ (0.49)		$ 0.11	$ (0.49)
Restricted stock units
Weighted average common shares outstanding:
Dilutive common stock options, restricted stock unit awards and restricted stock awards	208,609				186,726
Stock options
Weighted average common shares outstanding:
Dilutive common stock options, restricted stock unit awards and restricted stock awards	0				0
Restricted stock awards
Weighted average common shares outstanding:
Dilutive common stock options, restricted stock unit awards and restricted stock awards	0				0

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