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Employee Stock-Based Compensation (Tables) | 9 Months Ended
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Sep. 30, 2019
Share-based Payment Arrangement [Abstract] |
Schedule of awards | The following table summarizes restricted stock units subject to only service conditions granted under our 2010 Equity Incentive Plan:
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2019 |  | 2018 |  | 2019 |  | 2018
| (In thousands, except per share data)
Restricted stock units granted | 52 |  |  | 105 |  |  | 140 |  |  | 288 |
Weighted-average grant-date fair value | $ | 35.41 |  |  | $ | 79.71 |  |  | $ | 48.39 |  |  | $ | 71.74 |
The following table summarizes the performance-based restricted stock units granted under our 2010 Equity Incentive Plan:
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2019 |  | 2018 |  | 2019 |  | 2018
| (In thousands, except per share data)
Performance-based restricted stock units granted (1) | — |  |  | — |  |  | 883 |  |  | 612 |
Weighted-average grant-date fair value | $ | — |  |  | $ | — |  |  | $ | 50.15 |  |  | $ | 49.04 |
(1 | ) | Performance awards granted also reflects the issuance of any shares awarded in excess of their original target amount based on the Compensation Committee's certification of completed performance years. The grant date fair value for these awards are based on the grant price at the time of the original award.

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- Definition Tabular disclosure of the changes in outstanding nonvested restricted stock units. + 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) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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