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STOCK-BASED COMPENSATION (Tables) | 12 Months Ended
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Dec. 31, 2022
STOCK-BASED COMPENSATION |
Components of the Company's stock-based compensation | The following table summarizes the components of the Company’s stock-based compensation programs recorded as expense ($ in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
(in thousands) | ​ | 2022 |  | 2021 |  | 2020
Restricted shares: | ​ | ​ |  |  | ​ |  |  | ​ |
Pre-tax compensation expense | ​ | $ | 20,816 | ​ | $ | 14,865 | ​ | $ | 20,850
Tax benefit | ​ |  | (4,660) | ​ |  | (3,208) | ​ |  | (3,752)
Restricted share expense, net of tax | ​ | $ | 16,156 | ​ | $ | 11,657 | ​ | $ | 17,098
​
Summary information on unvested restricted stock outstanding | ​
​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ |  | Weighted
​ | ​ | ​ | ​ | Average
​ | ​ | Number of | ​ | Grant-Date
(number of shares in thousands) |  | Shares |  | Fair Value
Unvested as of December 31, 2019 | ​ | 3,465 |  | $ | 17.23
Forfeited |  | (59) |  | ​ | 17.11
Vested |  | (1,397) |  | ​ | 15.29
Granted |  | 861 |  | ​ | 24.53
Unvested as of December 31, 2020 |  | 2,870 |  | $ | 20.36
Forfeited |  | (191) |  | ​ | 25.34
Vested |  | (861) |  | ​ | 16.67
Granted |  | 778 |  | ​ | 37.04
Unvested as of December 31, 2021 |  | 2,596 |  | $ | 26.16
Forfeited |  | (90) |  | ​ | 26.37
Vested |  | (675) |  | ​ | 19.99
Granted |  | 854 |  | ​ | 30.12
Unvested as of December 31, 2022 |  | 2,685 | ​ | $ | 28.97
​

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- Definition Tabular disclosure of the changes in outstanding nonvested restricted stock units. + 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 (c)(2) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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