XML 75 R66.htm IDEA: XBRL DOCUMENT v3.22.4

Stockholders' Equity (Details)													6 Months Ended
	Nov. 09, 2022 shares	Oct. 28, 2022 shares	May 18, 2022 shares	Mar. 22, 2022 USD ($) $ / shares shares	Mar. 18, 2022 USD ($) $ / shares shares	Mar. 14, 2022 shares	Feb. 25, 2022 USD ($) shares	Dec. 06, 2021 USD ($) $ / shares shares	Jun. 07, 2021 USD ($) $ / shares shares	May 18, 2021 USD ($) shares	Nov. 24, 2020 USD ($) $ / shares shares	Mar. 23, 2020 USD ($) shares	Jun. 30, 2022 USD ($) $ / shares shares	Jun. 30, 2021 USD ($)	Oct. 27, 2022 shares	Jun. 29, 2022 shares	Mar. 17, 2022 $ / shares	Feb. 24, 2022 shares	Dec. 31, 2021 $ / shares shares	Jul. 15, 2021 shares	Dec. 31, 2020 $ / shares shares	Dec. 24, 2020 $ / shares	Nov. 20, 2020 $ / shares	Nov. 19, 2020 $ / shares	Sep. 27, 2017 $ / shares shares
Stock issued during period, shares, issued for services												35,592
Common shares issued for service | $												$ 33,812		$ 1,840,000
Issuance of common stock (in shares)					20,000,000			21,120,509	5,380,000		6,060,608
Shares issued, price per share | $ / shares					$ 0.50			$ 0.65	$ 1.30		$ 1.65
Proceeds from issuance of common stock gross | $											$ 10,000,000
Issuance of common stock | $								$ 12,423,706	$ 6,939,000		$ 9,100,000		$ 10,120,400
Cancellation of common stock due to reverse split (in shares)						859
Issuance of common stock to employees | $							$ 1
Stock split ratio							0.1						0.1
Number of common shares outstanding automatically combines and converts							10
Common stock, shares issued							6,399,460						1,219,937			29,278,601		63,994,606	266,640
Common stock, shares outstanding							6,399,460						1,219,937					6,399,460	266,640
Common stock, shares authorized		60,000,000					60,000,000						6,000,000		2,500,000			600,000,000	6,000,000
Proceeds after deducting legal costs | $					$ 8,825,000
Underwriting option period					45 days
Percentage of underwriters option to purchase additional common shares					15.00%
Maximum [Member]
Common stock, shares authorized																				600,000,000
Minimum [Member]
Common stock, shares authorized																				50,000,000
Split-adjusted
Stock issued during period, shares, issued for services												148
Issuance of common stock (in shares)					833,333			88,002	22,417		25,253
Shares issued, price per share | $ / shares					$ 12.0			$ 156.0	$ 312.0													$ 396.0
Cancellation of common stock due to reverse split (in shares)						36
Split-adjusted | Maximum [Member]
Common stock, shares authorized																				2,500,000
Split-adjusted | Minimum [Member]
Common stock, shares authorized																				208,333
Subsequent Event
Issuance of common stock (in shares)		2,500,000
Stock split ratio	0.05	0.041667
Number of common shares outstanding automatically combines and converts	24	24
Shares issued upon conversion	1	1
Common stock, shares issued	1,219,937	29,278,601
Common stock, shares outstanding	1,219,937	1,219,937
Common stock, shares authorized		60,000,000
September 2017 Offering Warrants
Class of Warrant or Right, Number of Securities Called by Warrants or Rights																					944,655				1,078,045
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares																					$ 0.001		$ 0.001	$ 4.25
Description Warrants Exercise Term													The exercisability of the warrants may be limited if, upon exercise, the holder or any of its affiliates would beneficially own more than 4.99% of the Company’s common shares.
September 2017 Offering Warrants | Split-adjusted
Class of Warrant or Right, Number of Securities Called by Warrants or Rights																					3,936				4,492
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares																					$ 0.24		$ 0.24	$ 1,020.0
November 2020 Offering Warrants
Term of warrant											5 years
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares					0.5						$ 0.5		$ 57.95				$ 1.81
Warrants outstanding													6,558,175
Weighted Average Remaining Life of Warrants													3 years 2 months 23 days
November 2020 Offering Warrants | Split-adjusted
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares					$ 12.0						$ 12.0						$ 434.4
Warrants outstanding													27,322
Investor Warrants [Member] | September 2017 Offering Warrants
Class of Warrant or Right, Number of Securities Called by Warrants or Rights																									945,654
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares																									$ 4.25
Investor Warrants [Member] | September 2017 Offering Warrants | Split-adjusted
Class of Warrant or Right, Number of Securities Called by Warrants or Rights																									3,940
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares																									$ 1,020.0
Placement Agent Warrants [Member] | September 2017 Offering Warrants
Class of Warrant or Right, Number of Securities Called by Warrants or Rights																									132,391
Term of warrant																									5 years
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares																									$ 4.675
Placement Agent Warrants [Member] | September 2017 Offering Warrants | Split-adjusted
Class of Warrant or Right, Number of Securities Called by Warrants or Rights																									552
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares																									$ 1,122.0
Registered Warrants [Member] | November 2020 Offering Warrants
Class of Warrant or Right, Number of Securities Called by Warrants or Rights											2,754,820
Registered Warrants [Member] | November 2020 Offering Warrants | Split-adjusted
Class of Warrant or Right, Number of Securities Called by Warrants or Rights											11,477
Unregistered Warrants [Member] | November 2020 Offering Warrants
Class of Warrant or Right, Number of Securities Called by Warrants or Rights											3,305,788
Unregistered Warrants [Member] | November 2020 Offering Warrants | Split-adjusted
Class of Warrant or Right, Number of Securities Called by Warrants or Rights											13,773
over-allotments
Issuance of common stock (in shares)				2,880,000
Shares issued, price per share | $ / shares				$ 0.50
Proceeds after deducting legal costs | $				$ 1,295,400
over-allotments | Split-adjusted
Issuance of common stock (in shares)				120,000
Shares issued, price per share | $ / shares				$ 12.0
over-allotments | Unregistered Warrants [Member] | November 2020 Offering Warrants
Class of Warrant or Right, Number of Securities Called by Warrants or Rights																			363,637
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares																			$ 1.815
over-allotments | Unregistered Warrants [Member] | November 2020 Offering Warrants | Split-adjusted
Class of Warrant or Right, Number of Securities Called by Warrants or Rights																			1,515
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares																			$ 435.6
Under 2014 Shares Incentive Plans [Member]
Issuance of common stock | $										$ 1,840,000
Issuance of common stock to employees (in shares)										1,600,000
Under 2014 Shares Incentive Plans [Member] | Split-adjusted
Issuance of common stock to employees (in shares)			6,667

X

- Definition

The description of warrants exercise term.

+ References

No definition available.

+ Details

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

X

- Definition

The cash inflow from issuance of equity after deducting legal costs.

+ References

No definition available.

+ Details

Name:	tanh_NetProceedsFromIssuanceOfEquity
Namespace Prefix:	tanh_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Represents the percentage of underwriters option to purchase additional common shares.

+ References

No definition available.

+ Details

Name:	tanh_PercentageOfUnderwritersOptionToPurchaseAdditionalCommonShares
Namespace Prefix:	tanh_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Gross proceeds from issuance of common stock in initial public offering.

+ References

No definition available.

+ Details

Name:	tanh_ProceedsFromIssuanceOfCommonStockGross
Namespace Prefix:	tanh_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

The underwriting option period, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	tanh_UnderwritingOptionPeriod
Namespace Prefix:	tanh_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The weighted average remaining life of warrants.

+ References

No definition available.

+ Details

Name:	tanh_WeightedAverageRemainingLifeOfWarrants
Namespace Prefix:	tanh_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Exercise price per share or per unit of warrants or rights outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21475-112644

+ Details

Name:	us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21475-112644

+ Details

Name:	us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Number of warrants or rights outstanding.

+ References

No definition available.

+ Details

Name:	us-gaap_ClassOfWarrantOrRightOutstanding
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_CommonStockSharesAuthorized
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_CommonStockSharesIssued
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21463-112644

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_CommonStockSharesOutstanding
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The number of shares converted in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 4
-URI https://asc.fasb.org/extlink&oid=126999549&loc=d3e4313-108586

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-URI https://asc.fasb.org/extlink&oid=126999549&loc=d3e4304-108586

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 5
-URI https://asc.fasb.org/extlink&oid=126999549&loc=d3e4332-108586

+ Details

Name:	us-gaap_ConversionOfStockSharesConverted1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The number of new shares issued in the conversion of stock in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 5
-URI https://asc.fasb.org/extlink&oid=126999549&loc=d3e4332-108586

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 4
-URI https://asc.fasb.org/extlink&oid=126999549&loc=d3e4313-108586

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-URI https://asc.fasb.org/extlink&oid=126999549&loc=d3e4304-108586

+ Details

Name:	us-gaap_ConversionOfStockSharesIssued1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Per share or per unit amount of equity securities issued.

+ References

No definition available.

+ Details

Name:	us-gaap_SharesIssuedPricePerShare
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Value, after forfeiture, of shares granted under share-based payment arrangement. Excludes employee stock ownership plan (ESOP).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 30
-Paragraph 3
-URI https://asc.fasb.org/extlink&oid=128088960&loc=d3e3913-113898

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 30
-Section 35
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=126965701&loc=d3e15009-113911

+ Details

Name:	us-gaap_StockGrantedDuringPeriodValueSharebasedCompensation
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Number of shares issued in lieu of cash for services contributed to the entity. Number of shares includes, but is not limited to, shares issued for services contributed by vendors and founders.

+ References

No definition available.

+ Details

Name:	us-gaap_StockIssuedDuringPeriodSharesIssuedForServices
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Number of new stock issued during the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21463-112644

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI https://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(28))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_StockIssuedDuringPeriodSharesNewIssues
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Reduction in the number of shares during the period as a result of a reverse stock split.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21463-112644

+ Details

Name:	us-gaap_StockIssuedDuringPeriodSharesReverseStockSplits
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Number, after forfeiture, of shares or units issued under share-based payment arrangement. Excludes shares or units issued under employee stock ownership plan (ESOP).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21463-112644

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI https://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(28))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Value of stock issued in lieu of cash for services contributed to the entity. Value of the stock issued includes, but is not limited to, services contributed by vendors and founders.

+ References

No definition available.

+ Details

Name:	us-gaap_StockIssuedDuringPeriodValueIssuedForServices
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI https://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21463-112644

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(28))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_StockIssuedDuringPeriodValueNewIssues
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SAB TOPIC 4.C)
-URI https://asc.fasb.org/extlink&oid=120397183&loc=d3e187143-122770

+ Details

Name:	us-gaap_StockholdersEquityNoteStockSplitConversionRatio1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Period between issuance and expiration of outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258

+ Details

Name:	us-gaap_WarrantsAndRightsOutstandingTerm
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ConversionOfStockByUniqueDescriptionAxis=tanh_SplitAdjustedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=tanh_September2017OfferingWarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=tanh_November2020OfferingWarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementEquityComponentsAxis=tanh_InvestorWarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementEquityComponentsAxis=tanh_PlacementAgentWarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementEquityComponentsAxis=tanh_RegisteredWarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementEquityComponentsAxis=tanh_UnregisteredWarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=us-gaap_OverAllotmentOptionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PlanNameAxis=tanh_Under2014SharesIncentivePlansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: