XML 77 R68.htm IDEA: XBRL DOCUMENT v3.22.4

Noncontrolling Interests - Additional Information (Details)	Jun. 30, 2021	Dec. 31, 2020
Shangchi Automobile And Subsidiary Shenzhen Yimao [Member]
Noncontrolling equity interest ownership percentage	30.00%	30.00%

X

- Definition

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

+ References

No definition available.

+ Details

Name:	us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	srt_OwnershipAxis=tanh_ShangchiAutomobileAndSubsidiaryShenzhenYimaoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: