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Share-based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2020
Share based Compensation |
Summary of the Group's share-based compensation cost | The table below presents a summary of the Group’s share-based compensation cost for the years ended December 31, 2018, 2019 and 2020 (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | For the year ended December 31,
​ |  | 2018 |  | 2019 |  | 2020
​ | ​ | RMB | ​ | RMB | ​ | RMB
Cost of revenues |  | 757,341 |  | 758,810 |  | 794,855
Selling and marketing expenses |  | 102,638 |  | 84,920 |  | 102,300
General and administrative expenses |  | 787,200 |  | 797,120 |  | 929,013
Research and development expenses |  | 824,552 |  | 763,239 |  | 837,321
​ |  | 2,471,731 |  | 2,404,089 |  | 2,663,489
​
Restricted share units |
Share based Compensation |
Summary of the Company's RSUs award activities | The following table presents a summary of the Company’s RSUs award activities for the years ended December 31, 2018, 2019 and 2020: ​
​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ |  | ​ |
​ | ​ | ​ | ​ | Weighted average | ​
​ | ​ | ​ | ​ | grant date fair | ​
​ | ​ | Number of RSUs | ​ | value | ​
​ | ​ | (in thousands) | ​ | US$ | ​
Outstanding at January 1, 2018 |  | 8,360 |  | 47.64 |
Granted |  | 10,365 |  | 54.24 |
Vested |  | (6,140) |  | 50.11 |
Forfeited |  | (460) |  | 47.67 |
Outstanding at December 31, 2018 |  | 12,125 |  | 52.02 |
​ | ​ | ​ | ​ | ​ | ​
Outstanding at January 1, 2019 |  | 12,125 |  | 52.02 |
Granted |  | 8,815 |  | 46.30 |
Vested |  | (5,910) |  | 51.22 |
Forfeited |  | (955) |  | 48.82 |
Outstanding at December 31, 2019 |  | 14,075 |  | 49.00 |
​ | ​ | ​ | ​ | ​ | ​
Outstanding at January 1, 2020 |  | 14,075 |  | 49.00 |
Granted |  | 6,269 |  | 68.35 |
Vested |  | (5,832) |  | 48.02 |
Forfeited |  | (416) |  | 54.47 |
Outstanding at December 31, 2020 |  | 14,096 |  | 57.85 |
​

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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=120381028&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=120381028&loc=d3e5047-113901 + Details
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- Definition Tabular disclosure of activity for award under share-based payment arrangement. Includes, but is not limited to, outstanding award at beginning and end of year, granted, exercised, forfeited, and weighted-average grant date fair value. + 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 (e) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 2: 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=120381028&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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