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STOCK-BASED COMPENSATION PLANS - Summary of our unvested stock options (Details) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Number of Shares, Granted   14,000
Non vested Share Awards [Member]    
Non-vested Shares Under Option, Beginning Balance 474,000 979,000
Number of Shares, Granted   15,000
Non-vested Shares Under Option, Vested (167,000) (276,000)
Non-vested Shares Under Option, Forfeited (212,000) (244,000)
Non-vested Shares Under Option, Ending Balance 95,000 474,000
Weighted Average Grant Date Fair Value, Beginning Balance $ 4.35 $ 4.03
Weighted Average Grant Date Fair Value, Granted   8.88
Weighted Average Grant Date Fair Value, Vested 1.93 3.34
Weighted Average Grant Date Fair Value, Forfeited 6.48 4.36
Weighted Average Grant Date Fair Value, Ending Balance $ 3.85 $ 4.35
Weighted Average Remaining Contractual Life (Years) 7 years 2 months 1 day 7 years 11 months 19 days
Aggregate Intrinsic Value $ 484 $ 3,677