EARNINGS (LOSS) 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, 2022	Mar. 31, 2022	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021
EARNINGS PER SHARE
Net income	$ 3,199	$ 13,111	$ 4,193	$ 3,597	$ 16,310	$ 7,790
Denominator:
Denominator for basic earnings per share - weighted average shares	8,876		8,806		8,904	8,826
Effect of dilutive securities:
Employee restricted stock and incentive stock options	111		141		158	150
Denominator for diluted earnings per share - adjusted weighted average shares and assumed conversion (in shares)	8,987		8,947		9,062	8,976
Basic earnings per share (in dollars per share)	$ 0.36		$ 0.48		$ 1.83	$ 0.88
Diluted earnings per share (in dollars per share)	$ 0.36		$ 0.47		$ 1.80	$ 0.87
Weighted average anti-dilutive employee restricted stock and incentive stock options (in shares)	301		114		238	126