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STOCK-BASED COMPENSATION (Tables) | 12 Months Ended
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Dec. 31, 2020
Share-based Payment Arrangement, Noncash Expense [Abstract] |
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions | A summary of all restricted stock activity during 2020 is as follows:
| Number of Shares |  | Weighted Average Grant Date Fair Value
Restricted Stock Outstanding at December 31, 2019 | 1,691,699 |  |  | $ | 20.24 |
Granted | 1,010,802 |  |  | 12.43 |
Vested | (314,048) |  |  | 19.60 |
Forfeited | (556,074) |  |  | 20.56 |
Restricted Stock Outstanding at December 31, 2020 | 1,832,379 |  |  | $ | 16.06 |
Schedule of Share-based Compensation, Stock Options, Activity | A summary of all stock option activity during 2020 is as follows:
| Number of Options |  | Weighted Average Exercise Price |  | Weighted Average Remaining Contractual Life |  | Aggregate Intrinsic Value ($ in millions)
Options Outstanding at December 31, 2019 | 531,942 |  |  | $ | 11.54 |  |  | 3.1 |  | $ | 1.7 |
Exercised | (113,312) |  |  | $ | 11.24 |  |  |  |  | $ | 0.5 |
Forfeited | — |  |  | $ | — |  |  |  |  |
Expired | (4,550) |  |  | $ | 13.74 |  |  |  |  |
Options Outstanding at December 31, 2020 | 414,080 |  |  | $ | 11.60 |  |  | 2.2 |  | $ | 2.3 |
Options Exercisable at December 31, 2020 | 368,333 |  |  | $ | 11.67 |  |  | 2.3 |  | $ | 2.0 |

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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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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + 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 (f)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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