Goodwill and Intangible Assets, Net - Summary of Company's Intangible Assets (Parenthetical) (Details) - Education assessment caseware |
12 Months Ended |
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Dec. 31, 2019
item
grade
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| Intangible assets | |
| Number of subjects included | item | 3 |
| Number of grades of junior and senior high school included | grade | 6 |
| X | ||||||||||
- Definition Number of grades of junior and senior high school. No definition available.
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| X | ||||||||||
- Definition Number of subjects, including but not limited to Literature, Mathematics and English. No definition available.
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| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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| X | ||||||||||
- Details
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