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Income Tax Expenses - Reconciliation between Income Tax Expenses Computed by Applying PRC Enterprise Tax Rate Before Income Taxes and Actual Provision (Parenthetical) (Details) - High and New Technology Enterprises | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Income Tax Disclosure [Line Items] |  |  |
Beneficial tax rate | 15.00% | 15.00% | 15.00%
Preferential tax rate | 15.00% | 15.00% |

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- Definition Beneficial tax rate on tax holidays carryforward. + References No definition available. + Details
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- Definition Preferential tax rate. + References No definition available. + Details
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- Details
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