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Equity-Based Compensation (Tables) | 3 Months Ended
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Mar. 31, 2019
Share-based Compensation [Abstract] |
Schedule Of Number Of Awards And Weighted Average Grant Date Fair Value | The following table sets forth the number of equity-based awards granted during the three months ended March 31, which will convert to shares upon vesting, along with the weighted average grant date fair values:
| 2019 |  | 2018
Awards | Number of Awards (1) |  | Weighted Average Grant Date Fair Value |  | Number of Awards (2) |  | Weighted Average Grant Date Fair Value
Performance stock units | 145,420 |  |  | $ | 40.55 |  |  | 132,288 |  |  | $ | 33.35 |
Restricted stock units | 117,821 |  |  | $ | 39.37 |  |  | 67,055 |  |  | $ | 33.35 |
(1) Performance stock units granted will convert to shares based on the Company's actual return on invested capital ("ROIC") relative to the ROIC targeted for the performance period ended December 31, 2019. (2) Performance stock units granted in 2018 which will convert to 126,337 shares to be issued on December 31, 2020, representing 95.5% of the targeted 2018 award, based on the Company’s actual ROIC compared to ROIC target for the performance period ended December 31, 2018.
Management Stock Purchase Plan | The following table provides the number of restricted stock units credited to active participant accounts and the payments made with respect to restricted stock units issued under the MSPP during the three months ended March 31,:
| 2019 |  | 2018
Restricted stock units credited | 51,608 |  |  | 63,937 |
Share-based liabilities paid (in thousands) | $ | 4,933 |  |  | $ | 4,717 |

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- Definition Tabular disclosure of the weighted-average grant-date fair value of equity options or other equity instruments granted 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 (d)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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