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Stock-Based Compensation (Tables) | 9 Months Ended
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Sep. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Schedule Of Unrecognized Compensation Cost And Remaining Weighted-Average Amortization Stock-Based Awards | As of September 30, 2019, the unrecognized compensation cost and remaining weighted-average amortization related to stock-based awards were as follows:
|  |  |  |  |  | Performance-
|  |  |  | Time-based |  | based
|  |  |  | Restricted |  | Restricted
|  |  |  | Stock |  | Stock
(in thousands, except remaining period data) |  |  |  | Units |  | Units(1)
Unrecognized compensation cost |  |  |  | $ 21,561 |  | $ 5,241
Remaining weighted-average |  |  |  |  |  |  |  |
amortization period |  |  |  | 2.6 years |  | 1.3 years
(1) Based on the probable achievement of the performance goals identified in each award.
Summary Of Stock Options | The following table summarizes activities relating to the Company’s stock options:
|  |  |  |  |  |  | Weighted- |  |
|  |  |  |  | Weighted- |  | Average |  | Aggregate
|  | Number of |  |  | Average |  | Remaining |  | Intrinsic
|  | Options |  |  | Exercise |  | Contractual |  | Value
|  | (in thousands) |  |  | Price |  | Term (Years) |  | (in thousands)
Outstanding as of December 31, 2018 |  | 374 |  |  | $20.35 |  |  |  |
Exercised |  | (76) |  |  | 21.86 |  |  |  |
Forfeited or expired |  | (2) |  |  | 23.07 |  |  |  |
Outstanding as of September 30, 2019 |  | 296 |  |  | $19.94 |  | 3.50 |  | $ 2,696
Exercisable as of September 30, 2019 |  | 296 |  |  | $19.94 |  | 3.50 |  | $ 2,696
Restricted Stock Units (RSUs) [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Summary Of Stock-Based Awards | As of September 30, 2019 and December 31, 2018, the Company had no restricted shares outstanding. Restricted stock units, time-based and performance-based, remain outstanding as detailed below. The following table summarizes the activities related to the Company’s time-based restricted stock units:
|  |  |  |  | Weighted-
|  | Number of |  |  | Average
|  | Units |  |  | Grant Date
|  | (in thousands) |  |  | Fair Value
Non-vested awards outstanding as of December 31, 2018 |  | 595 |  |  | $28.93
Granted |  | 630 |  |  | 27.34
Vested |  | (195) |  |  | 27.84
Forfeited |  | (54) |  |  | 29.34
Non-vested awards outstanding as of September 30, 2019 |  | 976 |  |  | $28.09
Performance-Based Restricted Stock Units [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Summary Of Stock-Based Awards | The following table summarizes the activities related to the Company’s performance-based restricted stock units:
|  |  |  |  |  | Weighted-
|  |  | Number of |  |  | Average
|  |  | Units |  |  | Grant Date
|  |  | (in thousands) |  |  | Fair Value
Non-vested awards outstanding as of December 31, 2018 |  |  | 319 |  |  | $29.19
Granted (1) |  |  | 198 |  |  | 27.45
Vested |  |  | (57) |  |  | 31.40
Forfeited |  |  | (74) |  |  | 24.41
Non-vested awards outstanding as of September 30, 2019 |  |  | 386 |  |  | $28.90
(1) Represents target number of units that can vest based on the achievement of the performance goals.

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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=116856206&loc=d3e5070-113901 + Details
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