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STOCK-BASED COMPENSATION (Tables) | 9 Months Ended
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Sep. 30, 2022
STOCK-BASED COMPENSATION |
Schedule of allocated stock-based compensation | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended | ​ | Nine Months Ended
​ | ​ | September 30, | ​ | September 30,
​ |  | 2022 |  | 2021 |  | 2022 |  | 2021
Equity award expense | ​ | $ | 2,998 | ​ | $ | 2,900 | ​ | $ | 9,035 | ​ | $ | 8,741
Liability award expense | ​ |  | 24 | ​ |  | 127 | ​ |  | 904 | ​ |  | 1,121
Total stock-based compensation expense | ​ | $ | 3,022 | ​ | $ | 3,027 | ​ | $ | 9,939 | ​ | $ | 9,862
Schedule of restricted stock activity | ​
​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | Weighted
​ | ​ | ​ | ​ | Average
​ | ​ | ​ | ​ | Grant Date
​ | ​ | Shares | ​ | Fair Value
​ |  | (in thousands) |  | Per Share
Non-vested restricted stock, December 31, 2021 |  | 2,578 | ​ | $ | 10.35
Granted |  | 1,861 | ​ |  | 9.03
Vested |  | (1,152) | ​ |  | 10.25
Canceled |  | (244) | ​ |  | 9.28
Non-vested restricted stock, September 30, 2022 (1) |  | 3,043 | ​ | $ | 9.67

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- Definition Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year. + References No definition available. + Details
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