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Advances to suppliers (Details) - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Advances to suppliers
Advances to suppliers	$ 3,459,374	$ 7,033,556
Allowance for doubtful accounts	(38,746)	(179,095)
Including:
Advances to suppliers, net	$ 3,420,628	$ 6,854,461

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- Definition

It represents the advances on inventory purchases allowance.

+ References

No definition available.

+ Details

Name:	tanh_AdvancesOnInventoryPurchasesAllowance
Namespace Prefix:	tanh_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

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- Definition

Advances To Suppliers.

+ References

No definition available.

+ Details

Name:	tanh_AdvancesToSuppliers
Namespace Prefix:	tanh_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

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- Definition

Advances to suppliers, net.

+ References

No definition available.

+ Details

Name:	tanh_AdvancesToSuppliersAbstract
Namespace Prefix:	tanh_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

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- Definition

Amount classified as advances to suppliers expected to be received within one year or the normal operating cycle, if longer attributable to continuing operations.

+ References

No definition available.

+ Details

Name:	tanh_AdvancesToSuppliersfromContinuingOperationsNet
Namespace Prefix:	tanh_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- References

No definition available.

+ Details

Name:	tanh_IncludingAbstract
Namespace Prefix:	tanh_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration