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Investment in Joint Ventures and Majority Owned Subsidiaries (Details Textual) - USD ($) | 3 Months Ended
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Sep. 27, 2020 | Sep. 29, 2019
Schedule Of Equity Method Investments [Line Items] |  |
Equity earnings of joint ventures | $ 825,000 | $ 484,000
ADAC-STRATTEC LLC |  |
Schedule Of Equity Method Investments [Line Items] |  |
Percentage ownership interest in less than wholly owned consolidated subsidiary | 51.00% | 51.00%
Income (loss) from majority owned subsidiaries, impact on net income | $ 1,400,000 | $ 1,000,000.0
STRATTEC POWER ACCESS LLC |  |
Schedule Of Equity Method Investments [Line Items] |  |
Percentage ownership interest in less than wholly owned consolidated subsidiary | 80.00% | 80.00%
Income (loss) from majority owned subsidiaries, impact on net income | $ 685,000 | $ 266,000
ADAC | ADAC-STRATTEC LLC |  |
Schedule Of Equity Method Investments [Line Items] |  |
Percentage ownership interest in less than wholly owned consolidated subsidiary | 49.00% | 49.00%
Engineering, research, design and sales fee | $ 2,400,000 | $ 2,200,000
Sales | $ 3,100,000 | $ 3,700,000
WITTE | STRATTEC POWER ACCESS LLC |  |
Schedule Of Equity Method Investments [Line Items] |  |
Percentage ownership interest in less than wholly owned consolidated subsidiary | 20.00% | 20.00%
Purchases | $ 83,000 | $ 393,000
VAST LLC |  |
Schedule Of Equity Method Investments [Line Items] |  |
Percentage ownership interest in equity method investment | 33.33% |
VAST LLC | MINDA-VAST ACCESS SYSTEMS |  |
Schedule Of Equity Method Investments [Line Items] |  |
Percentage ownership interest in equity method investment | 50.00% |
VAST LLC | STRATTEC |  |
Schedule Of Equity Method Investments [Line Items] |  |
Percentage ownership interest in equity method investment | 33.30% |
Equity earnings of joint ventures | $ 825,000 | 487,000
Payments to acquire interest in joint venture | $ 0 | $ 0
VAST LLC | ADAC |  |
Schedule Of Equity Method Investments [Line Items] |  |
Percentage ownership interest in equity method investment | 33.30% |
VAST LLC | WITTE |  |
Schedule Of Equity Method Investments [Line Items] |  |
Percentage ownership interest in equity method investment | 33.30% |

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