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STOCK-BASED COMPENSATION (Tables) | 9 Months Ended
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Sep. 30, 2021
STOCK-BASED COMPENSATION |
Activity Related to Stock Options | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ |  | ​ | ​ |  | Weighted- |  | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | Average | ​ | Aggregate
​ | ​ | ​ | ​ | Weighted- | ​ | Remaining | ​ | Intrinsic
​ | ​ | Number of | ​ | Average Exercise | ​ | Contractual | ​ | Value
​ |  | Options |  | Price |  | Years |  | (In thousands)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Options outstanding at January 1, 2021 | ​ | 28,842 | ​ | $ | 15.05 | ​ | ​ | ​ | ​ | ​
Options outstanding at January 1, 2021 as adjusted for conversion | ​ | 18,685 | ​ | ​ | 23.23 | ​ | ​ | ​ | ​ | ​
Options acquired | ​ | 180,020 | ​ | ​ | 35.39 | ​ | ​ | ​ | ​ | ​
Options exercised | ​ | (17,102) | ​ |  | 23.40 | ​ | ​ | ​ | ​ | ​
Options forfeited | ​ | (29,421) | ​ |  | 35.38 | ​ | ​ | ​ | ​ | ​
Options outstanding at September 30, 2021 |  | 152,182 | ​ | $ | 35.24 |  | 7.4 | ​ | $ | 18
Options vested and exercisable at September 30, 2021 |  | 152,182 | ​ | $ | 35.24 |  | 7.4 | ​ | $ | 18
​
Information Related to Stock Option Plan | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended | ​ | Nine Months Ended
​ | ​ | September 30, | ​ | September 30,
(In thousands) |  | 2021 |  | 2020 | ​ | 2021 |  | 2020
Cash received for option exercise cost | ​ | $ | — | ​ | $ | — | ​ | $ | 396 | ​ | $ | 38
Income tax benefit recognized on stock option exercises | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | —
Intrinsic value of options exercised | ​ |  | — | ​ |  | — | ​ |  | 77 | ​ |  | 8
Activity Related to Restricted Stock Awards | ​
​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ |  | Weighted-
​ | ​ | ​ | ​ | Average
​ | ​ | Number of | ​ | Grant-Date
​ |  | Shares |  | Fair Value
​ | ​ | ​ | ​ | ​ | ​
Unvested allocated shares outstanding at January 1, 2021 | ​ | — | ​ | $ | —
Shares acquired in the Merger | ​ | 101,778 | ​ | ​ | 25.98
Shares granted |  | 390,027 | ​ |  | 26.48
Shares vested | ​ | (9,838) | ​ | ​ | 25.41
Shares forfeited |  | (33,089) | ​ |  | 25.73
Unvested allocated shares at September 30, 2021 |  | 448,878 | ​ | $ | 26.45
Information Related to Restricted Stock Award Plan | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended | ​ | Nine Months Ended
​ | ​ | September 30, | ​ | September 30,
(Dollars in thousands) |  | 2021 |  | 2020 | ​ | 2021 |  | 2020
Compensation expense recognized | ​ | $ | 1,454 | ​ | $ | 444 | ​ | $ | 3,804 | ​ | $ | 1,311
Income tax expense recognized on vesting of RSA | ​ |  | — | ​ |  | (38) | ​ |  | (86) | ​ |  | (95)
Activity Related to Performance Based Equity Awards | ​
​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ |  | Weighted-
​ | ​ | ​ | ​ | Average
​ | ​ | Number of | ​ | Grant-Date
​ |  | Shares |  | Fair Value
Maximum aggregate share payout at January 1, 2021 | ​ | — | ​ | $ | —
Shares granted |  | 38,948 | ​ |  | 31.40
Maximum aggregate share payout at September 30, 2021 |  | 38,948 | ​ | $ | 31.40
Minimum aggregate share payout |  | — | ​ | ​ | —
Expected aggregate share payout |  | 25,963 | ​ | $ | 31.40
Information Related to Performance Based Share Award Plan | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended | ​ | Nine Months Ended | ​
​ | ​ | September 30, | ​ | September 30, | ​
(In thousands) |  | 2021 |  | 2020 | ​ | 2021 |  | 2020 | ​
Compensation expense recognized | ​ | $ | 81 | ​ | $ | 210 | ​ | $ | 81 | ​ | $ | 362 | ​
Income tax expense recognized on vesting of LTIP | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​

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