Number Of Non-Transferable Subscription Right

No definition available.

Name:	tgan_NumberOfNonTransferableSubscriptionRight
Namespace Prefix:	tgan_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Sale Of Stock, Subscription Right, Number Of Shares That Can Be Purchased

+ References

No definition available.

+ Details

Name:	tgan_SaleOfStockSubscriptionRightNumberOfSharesThatCanBePurchased
Namespace Prefix:	tgan_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

The cash inflow from the additional capital contribution to the entity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 14
-Subparagraph (a)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-14

+ Details

Name:	us-gaap_ProceedsFromIssuanceOfCommonStock
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Cash received on stock transaction after deduction of issuance costs.

+ References

No definition available.

+ Details

Name:	us-gaap_SaleOfStockConsiderationReceivedOnTransaction
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The number of shares issued or sold by the subsidiary or equity method investee per stock transaction.

+ References

No definition available.

+ Details

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

- Definition

Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.

+ References

No definition available.

+ Details

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

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 830
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481674/830-30-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 855
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483399/855-10-50-2

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

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

- Details

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

Subsequent Events (Details) $ / shares in Units, $ in Thousands		3 Months Ended
	Aug. 14, 2023 USD ($) shares	Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)	Jul. 05, 2023 segment $ / shares shares
Subsequent Event [Line Items]
Proceeds from issuance of common stock		$ 2,000	$ 16,000
Subsequent Event
Subsequent Event [Line Items]
Number of non-transferable subscription right \| segment				1
Subsequent Event \| Rights Offering
Subsequent Event [Line Items]
Subscription right, number of shares that can be purchased \| shares				0.07655623
Price per share (in usd per share) \| $ / shares				$ 3.30
Number of shares sold in private placement offering (in shares) \| shares	2,404,758
Aggregate gross proceeds from closing of offering	$ 7,900
Proceeds from issuance of common stock	$ 7,600