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BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Earnings (Loss) Per Share (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
EARNINGS (LOSS) PER SHARE AND STOCKHOLDERS' EQUITY |  |  |
Net income (loss) - basic | $ 11,706 | $ 147 | $ (5,822)
Net income (loss) - diluted | $ 11,706 | $ 147 | $ (5,822)
Weighted-average common share equivalents - basic (in shares) | 32,516,758 | 27,093,656 | 26,979,829
Potential dilution from share-based awards (in shares) | 2,429,000 | 690,000 |
Weighted-average common and common share equivalents - diluted (in shares) | 34,945,951 | 27,783,654 | 26,979,829
Anti-dilutive share-based awards and warrants excluded from the calculation of diluted loss per share (in shares) | 149,000 | 1,943,000 | 3,851,000

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