Majority owned subsidiaries, impact on net income.

No definition available.

Name:	strt_MajorityOwnedSubsidiariesImpactOnNetIncome
Namespace Prefix:	strt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Majority owned subsidiaries, impact on net sales.

+ References

No definition available.

+ Details

Name:	strt_MajorityOwnedSubsidiariesImpactOnNetSales
Namespace Prefix:	strt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Operating expenses paid to related party.

+ References

No definition available.

+ Details

Name:	strt_OperatingExpensesPaidToRelatedParty
Namespace Prefix:	strt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The registrant's ownership interest percentage in a consolidated subsidiary which is less than 100% owned (for which a noncontrolling interest exists) but is controlled by the registrant.

+ References

No definition available.

+ Details

Name:	strt_PercentageOwnershipInterestInLessThanWhollyOwnedConsolidatedSubsidiary
Namespace Prefix:	strt_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571

+ Details

Name:	us-gaap_EquityMethodInvestmentOwnershipPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of income (loss) for proportionate share of equity method investee's income (loss).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(12))
-URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04(10))
-URI http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04(13)(f))
-URI http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599

Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=109237563&loc=d3e33749-111570

+ Details

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

- Definition

The cash outflow associated with the investment in or advances to an entity in which the reporting entity shares control of the entity with another party or group.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3213-108585

+ Details

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

- Definition

Purchases during the period (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

+ References

No definition available.

+ Details

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

- Definition

Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07.1(c))
-URI http://asc.fasb.org/extlink&oid=120401555&loc=SL114874292-224272

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1(e))
-URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227

+ Details

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

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

- Details

Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=strt_VehicleAccessSystemsTechnologyLlcMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementGeographicalAxis=country_BR
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionAxis=strt_MindaVastAccessSystemsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=strt_StrattecSecurityCorporationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_CounterpartyNameAxis=strt_ADACMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_CounterpartyNameAxis=strt_WitteMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ConsolidatedEntitiesAxis=strt_StrattecPowerAccessLlcMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ConsolidatedEntitiesAxis=strt_ADACSTRATTECLLCMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Investment in Joint Ventures and Majority Owned Subsidiaries (Details Textual) - USD ($)	3 Months Ended		9 Months Ended
	Mar. 28, 2021	Mar. 29, 2020	Mar. 28, 2021	Mar. 29, 2020
Schedule Of Equity Method Investments [Line Items]
Equity (loss) earnings of joint ventures	$ (56,000)	$ (921,000)	$ 1,844,000	$ 55,000
Payments to acquire interest in joint venture			100,000
VAST LLC \| BRAZIL
Schedule Of Equity Method Investments [Line Items]
Payments to acquire interest in joint venture			$ 300,000
VAST LLC \| MINDA-VAST ACCESS SYSTEMS
Schedule Of Equity Method Investments [Line Items]
Percentage ownership interest in equity method investment	50.00%		50.00%
STRATTEC \| VAST LLC
Schedule Of Equity Method Investments [Line Items]
Percentage ownership interest in equity method investment	33.33%		33.33%
Equity (loss) earnings of joint ventures			$ 1,800,000	36,000
Payments to acquire interest in joint venture			$ 100,000	$ 0
ADAC \| VAST LLC
Schedule Of Equity Method Investments [Line Items]
Percentage ownership interest in equity method investment	33.30%		33.30%
WITTE \| VAST LLC
Schedule Of Equity Method Investments [Line Items]
Percentage ownership interest in equity method investment	33.30%		33.30%
Strattec Power Access Llc \| STRATTEC
Schedule Of Equity Method Investments [Line Items]
Percentage ownership interest in less than wholly owned consolidated subsidiary	80.00%	80.00%	80.00%	80.00%
Majority owned subsidiary, impact on net income			$ 4,700,000	$ (167,000)
Majority owned subsidiary, impact on net sales			72,000,000.0	57,000,000.0
Strattec Power Access Llc \| WITTE
Schedule Of Equity Method Investments [Line Items]
Purchases	$ 286,000	$ 190,000	$ 606,000	$ 832,000
Percentage ownership interest in less than wholly owned consolidated subsidiary	20.00%	20.00%	20.00%	20.00%
ADAC-STRATTEC LLC \| STRATTEC
Schedule Of Equity Method Investments [Line Items]
Percentage ownership interest in less than wholly owned consolidated subsidiary	51.00%	51.00%	51.00%	51.00%
Majority owned subsidiary, impact on net income			$ 3,400,000	$ 2,600,000
Majority owned subsidiary, impact on net sales			$ 98,700,000	$ 88,800,000
ADAC-STRATTEC LLC \| ADAC
Schedule Of Equity Method Investments [Line Items]
Percentage ownership interest in less than wholly owned consolidated subsidiary	49.00%	49.00%	49.00%	49.00%
Engineering, research, design and sales fee	$ 2,100,000	$ 2,200,000	$ 6,900,000	$ 6,200,000
Sales	$ 2,700,000	$ 3,500,000	$ 9,100,000	$ 9,200,000