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STOCK-BASED COMPENSATION - Narrative (Details) $ / shares in Units, $ in Millions | 3 Months Ended
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Mar. 31, 2020 USD ($) plan $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Share-based compensation arrangement by share-based payment award, number of plans | plan | 2
Grants in period, net of forfeitures (in shares) | shares | 348,587
Options, weighted average grant date fair value (in dollars per share) | $ / shares | $ 13.03
Stock options |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Total unrecognized compensation costs | $ | $ 8.2
Weighted-average period for cost recognition | 3 years
Stock options | Directors |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Stock options exercisable, vesting period | 1 year
Stock options | Employees |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Expiration period | 8 years
Restricted stock awards/stock units |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Stock options exercisable, vesting period | 3 years
Total unrecognized compensation costs | $ | $ 37.3
Weighted-average period for cost recognition | 2 years
Awards granted during the period (in shares) | shares | 262,623
Other than options, weighted average grant date fair value (in dollars per share) | $ / shares | $ 43.89
Performance stock and Restricted stock awards |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Requisite service periods of awards | 3 years
Performance shares |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Awards granted during the period (in shares) | shares | 180,875
Other than options, weighted average grant date fair value (in dollars per share) | $ / shares | $ 43.39
Minimum | Stock options | Directors and Certain Executive Officers |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Expiration period | 6 years
Maximum | Stock options |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Stock options exercisable, vesting period | 4 years
Maximum | Stock options | Directors and Certain Executive Officers |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Expiration period | 10 years

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- Definition Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + 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 (i) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + 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)(iii)(1) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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