EARNINGS (LOSS) PER SHARE - Computation of Basic and Diluted Loss Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
EARNINGS PER SHARE
Net income	$ 24,768	$ 4,746
Denominator:
Denominator for basic earnings per share - weighted average shares	8,815	8,775
Effect of dilutive securities:
Employee restricted stock and incentive stock options	158	99
Denominator for diluted earnings per share - adjusted weighted average shares and assumed conversion (in shares)	8,973	8,874
Basic earnings per share (in dollars per share)	$ 2.81	$ 0.54
Diluted earnings per share (in dollars per share)	$ 2.76	$ 0.53
Weighted average anti-dilutive employee restricted stock and incentive stock options (in shares)	106	313