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v3.20.4

Segment Information - Schedule of segment reporting information by segment (Detail) ¥ in Thousands, $ in Thousands | 9 Months Ended
--- | ---
Sep. 30, 2020 CNY (¥) segment | Sep. 30, 2020 USD ($) segment | Sep. 30, 2019 CNY (¥) segment
Segment Reporting Information [Line Items] |  |  |
Number of reportable segments | segment | 2 | 2 | 2
Net revenues |  |  |
Total net revenues | ¥ 2,060,719 | $ 303,511 | ¥ 894,451
Cost of revenues |  |  |
Total cost of revenues | ¥ 1,131,902 | $ 166,711 | ¥ 646,259
Gross margin |  |  |
Total gross margin | 45.00% | 45.00% | 28.00%
Learning services and products [Member] |  |  |
Net revenues |  |  |
Total net revenues | ¥ 1,725,672 |  | ¥ 539,957
Cost of revenues |  |  |
Total cost of revenues | ¥ 885,756 |  | ¥ 400,035
Gross margin |  |  |
Total gross margin | 49.00% | 49.00% | 26.00%
Online marketing services [Member] |  |  |
Net revenues |  |  |
Total net revenues | ¥ 335,047 | $ 49,347 | ¥ 354,494
Cost of revenues |  |  |
Total cost of revenues | ¥ 246,146 | $ 36,253 | ¥ 246,224
Gross margin |  |  |
Total gross margin | 27.00% | 27.00% | 31.00%

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