Basis of Presentation and Summary of Significant Accounting Policies - Income taxes (Details) |
12 Months Ended | |||
|---|---|---|---|---|
Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
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| Basis of Presentation and Summary of Significant Accounting Policies | ||||
| Corporate tax rate | 21.00% | 21.00% | 21.00% | 35.00% |
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- References No definition available.
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| X | ||||||||||
- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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