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Share-based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2020
Share-based Payment Arrangement [Abstract] |
Schedule of valuation assumptions |
|  | For the Year Ended December 31, |
|  | 2018 |  |  | 2019 |  |  | 2020 |
Expected volatility |  |  | 47.8%-48.4% |  |  |  | 49.6%-52.1% |  |  |  | 50.1%-55.0% |
Weighted average volatility |  |  | 48.3% |  |  |  | 50.8% |  |  |  | 51.9% |
Expected dividends |  |  | — |  |  |  | — |  |  |  | — |
Risk-free rate |  |  | 2.6%-2.8% |  |  |  | 1.4%-2.4% |  |  |  | 0.4%-0.7% |
Contractual term (in years) |  |  | 6 |  |  |  | 6 |  |  |  | 6-7 |
Schedule of share options activities |
|  | Employees |  |  | Senior Management |  |  | Consultants |  |  | Total |  |  | Weighted Average Exercise Price |  |  | Weighted Average Remaining Contractual Life |  |  | Aggregate Intrinsic Value |
|  | (In thousands) |  |  | (In thousands) |  |  | (In thousands) |  |  | (In thousands) |  |  | US$ |  |  | (In years) |  |  | (RMB in thousands) |
Outstanding at January 1, 2018 |  |  | 8,124 |  |  |  | 10,595 |  |  |  | 700 |  |  |  | 19,419 |  |  |  | 0.0001 |  |  |  | 4.80 |  |  |  | 880,197 |
Granted |  |  | 2,587 |  |  |  | 620 |  |  |  | — |  |  |  | 3,207 |  |  |  | 0.0001 |  |  |  |  |  |  |  |  |
Exercised |  |  | (2,387 | ) |  |  | (5,543 | ) |  |  | (212 | ) |  |  | (8,142 | ) |  |  | 0.0001 |  |  |  |  |  |  |  |  |
Forfeited |  |  | (683 | ) |  |  | (1,437 | ) |  |  | (50 | ) |  |  | (2,170 | ) |  |  | 0.0001 |  |  |  |  |  |  |  |  |
Outstanding at December 31, 2018 |  |  | 7,641 |  |  |  | 4,235 |  |  |  | 438 |  |  |  | 12,314 |  |  |  | 0.0001 |  |  |  | 4.46 |  |  |  | 1,233,028 |
Outstanding at January 1, 2019 |  |  | 7,641 |  |  |  | 4,235 |  |  |  | 438 |  |  |  | 12,314 |  |  |  | 0.0001 |  |  |  | 4.46 |  |  |  | 1,233,028 |
Granted |  |  | 2,464 |  |  |  | 730 |  |  |  | — |  |  |  | 3,194 |  |  |  | 0.0001 |  |  |  |  |  |  |  |  |
Exercised |  |  | (1,352 | ) |  |  | (710 | ) |  |  | (193 | ) |  |  | (2,255 | ) |  |  | 0.0001 |  |  |  |  |  |  |  |  |
Forfeited |  |  | (479 | ) |  |  | (600 | ) |  |  | — |  |  |  | (1,079 | ) |  |  | 0.0001 |  |  |  |  |  |  |  |  |
Outstanding at December 31, 2019 |  |  | 8,274 |  |  |  | 3,655 |  |  |  | 245 |  |  |  | 12,174 |  |  |  | 0.0001 |  |  |  | 4.13 |  |  |  | 1,581,408 |
Outstanding at January 1, 2020 |  |  | 8,274 |  |  |  | 3,655 |  |  |  | 245 |  |  |  | 12,174 |  |  |  | 0.0001 |  |  |  | 4.13 |  |  |  | 1,581,408 |
Granted |  |  | 6,966 |  |  |  | 8,700 |  |  |  | 50 |  |  |  | 15,716 |  |  |  | 2.9007 |  |  |  |  |  |  |  |  |
Exercised |  |  | (2,784 | ) |  |  | (1,643 | ) |  |  | (65 | ) |  |  | (4,492 | ) |  |  | 0.0001 |  |  |  |  |  |  |  |  |
Forfeited |  |  | (1,101 | ) |  |  | — |  |  |  | — |  |  |  | (1,101 | ) |  |  | 0.4234 |  |  |  |  |  |  |  |  |
Outstanding at December 31, 2020 |  |  | 11,355 |  |  |  | 10,712 |  |  |  | 230 |  |  |  | 22,297 |  |  |  | 2.0236 |  |  |  | 5.41 |  |  |  | 12,177,047 |
Exercisable at December 31, 2020 |  |  | 830 |  |  |  | 130 |  |  |  | 155 |  |  |  | 1,115 |  |  |  | 0.0001 |  |  |  | 2.97 |  |  |  | 623,376 |

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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, 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 (d) -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 (e) -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 (c)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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