Summary of Significant Accounting Policies - Land Use Right, Net (Details) - Land-rights - intangible	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2018
Land use right, net
Number of intangible assets, count	2
Useful life	50 years	30 years	36 years

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

Name:	us-gaap_FiniteLivedIntangibleAssetUsefulLife
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration