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Employee Benefits And Stock-Based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2019
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |
Classification Of Stock-Based Compensation | The following table presents the classification of stock-based compensation:
| Year Ended December 31,
| 2019 |  | 2018 |  | 2017
| (In thousands)
Cost of revenues | $ | 6,739 |  |  | $ | 6,835 |  |  | $ | 7,030 |
Sales and marketing | 3,755 |  |  | 4,972 |  |  | 5,688 |
Research and development | 6,370 |  |  | 6,728 |  |  | 6,113 |
General and administrative | 33,762 |  |  | 33,969 |  |  | 34,076 |
Total stock-based compensation | $ | 50,626 |  |  | $ | 52,504 |  |  | $ | 52,907 |
Nature Of Total Stock-Based Compensation | The following table presents the nature of the Company’s total stock-based compensation:
| Year Ended December 31,
| 2019 |  | 2018 |  | 2017
| (In thousands)
RSUs | $ | 36,930 |  |  | $ | 38,005 |  |  | $ | 38,087 |
PSUs | 10,522 |  |  | 12,403 |  |  | 13,270 |
ESPP | 4,864 |  |  | 4,166 |  |  | 4,005 |
Capitalization (Included in Property and equipment, net) | (1,690 | ) |  | (2,070 | ) |  | (2,455 | )
Total stock-based compensation expenses | $ | 50,626 |  |  | $ | 52,504 |  |  | $ | 52,907 |
Summary Of Unvested RSUs Activity | The following table summarizes unvested RSUs activity for the year ended December 31, 2019:
| Shares |  | Weighted-Average Grant-Date Fair Value
| (Shares in thousands)
Unvested at beginning of period | 1,222 |  |  | $ | 90.88 |
Granted | 307 |  |  | $ | 172.87 |
PSU achievement adjustment | 85 |  |  | $ | 42.22 |
Vested and settled | (682 | ) |  | $ | 81.05 |
Forfeited | (56 | ) |  | $ | 110.45 |
| 876 |  |  | $ | 121.21 |

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- Definition Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement. + 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 (h)(1) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=115993241&loc=d3e301413-122809 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5047-113901 + Details
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