Discontinued Operations (Details) - Discontinued Operations, Disposed of by Sale - Ventev brand and other retail-related assets - USD ($) $ in Millions		3 Months Ended	9 Months Ended
Dec. 02, 2020	Dec. 27, 2020	Dec. 27, 2020
Discontinued Operations
Cash consideration	$ 9.5
Maximum royalty payments receivable	$ 3.0
Royalty payment period	4 years
Customer returns resale period	2 years
Cost to sell business		$ 3.0
Discontinued Operation, Name of Segment [Extensible List]	tess:RetailMarketSegmentMember	tess:RetailMarketSegmentMember	tess:RetailMarketSegmentMember

The cost to sell business included in gain (loss) from disposal of discontinued operation before income tax.

No definition available.

Name:	tess_DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTaxCostToSellBusiness
Namespace Prefix:	tess_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Represents the period from close of sale over which the company may resell customer returns to buyer under the sale agreement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	tess_DisposalGroupIncludingDiscontinuedOperationCustomerReturnsResalePeriod
Namespace Prefix:	tess_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The maximum amount of royalty payments company is entitled to receive under sale agreement.

+ References

No definition available.

+ Details

Name:	tess_DisposalGroupIncludingDiscontinuedOperationMaximumRoyaltyPayments
Namespace Prefix:	tess_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The period from closing of sale over which company is entitled to royalty payments under sale agreement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	tess_DisposalGroupIncludingDiscontinuedOperationPeriodOfRoyaltyPayments
Namespace Prefix:	tess_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Indicates business segment that includes component or group of components disposed of or classified as held-for-sale representing strategic shift that has or will have major effect on operation and financial result.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=109222650&loc=d3e1361-107760

+ Details

Name:	us-gaap_DiscontinuedOperationNameOfSegmentExtensibleList
Namespace Prefix:	us-gaap_
Data Type:	srt-types:extensibleListItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of consideration received or receivable for the disposal of assets and liabilities, including discontinued operation.

+ References

No definition available.

+ Details

Name:	us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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

- Details

Name:	us-gaap_DisposalGroupClassificationAxis=us-gaap_DiscontinuedOperationsDisposedOfBySaleMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis=tess_VentevBrandAndOtherRetailRelatedAssetsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: