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SHARE-BASED COMPENSATION PLANS (Tables) | 12 Months Ended
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Dec. 31, 2021
Share-based Payment Arrangement [Abstract] |
Schedule of Stock Options Activity | A summary of changes in stock options for 2021 is as follows:
| Number |  | Weighted Average Exercise Price |  | Weighted Average Remaining Contractual Term |  | Aggregate Intrinsic Value (in thousands)
Options outstanding at December 31, 2020 | 188,181 |  | $ | 12.85 |  |  | 1.3 years |  | $ | 3,933 |
Exercised | (188,181) |  | 12.85 |  |  |  |  |
Options outstanding at December 31, 2021 | — |  | $ | — |  |  | — |  |  | $ | — |
Schedule of Restricted Shares Activity | A summary of the status of the combined RSUs and PSUs is as follows:
| Number |  | Weighted Average Grant Date Fair Value
Outstanding at December 31, 2020 | 295,840 |  | $ | 24.52 |
Granted | 106,372 |  | 33.01 |
Cancelled or forfeited | (73,577) |  | 28.06 |
Vested | (60,104) |  | 24.89 |
Outstanding at December 31, 2021 | 268,531 |  |  | $ | 26.83 |
Schedule of Performance Share Units Valuation Assumptions | The assumptions used in the Monte Carlo simulations used to determine fair market value of the PSUs granted in 2021, 2020 and 2019 are set forth in the table below:
|  | 2021 |  | 2020 |  | 2019
Volatility of common stock |  | 40.5 | % |  | 33.9 | % |  | 29.4 | %
Average volatility of peer companies |  | 43.5 | % |  | 34.8 | % |  | 24.5 | %
Average correlation coefficient of peer companies |  | 0.8004 | % |  | 0.7561 | % |  | 0.7272 | %
Risk-free interest rate |  | 0.2 | % |  | 0.3 | % |  | 2.3 | %
Expected term in years |  | 3.00 years |  | 2.76 years |  | 2.69 years

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- Definition Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year. + 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)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + 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 (d) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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