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Major Customers and Foreign Sales - Schedule of Revenues by Geographic Region (Details) - Net Revenues - Geographic Concentration Risk	9 Months Ended
	Jun. 30, 2026	Jun. 30, 2025
Revenue, Major Customer [Line Items]
Concentration risk, percentage	100.00%	100.00%
United States
Revenue, Major Customer [Line Items]
Concentration risk, percentage	29.00%	27.00%
Canada
Revenue, Major Customer [Line Items]
Concentration risk, percentage	2.00%	1.00%
Mexico
Revenue, Major Customer [Line Items]
Concentration risk, percentage	2.00%	1.00%
Other Americas
Revenue, Major Customer [Line Items]
Concentration risk, percentage	1.00%	2.00%
Total Americas
Revenue, Major Customer [Line Items]
Concentration risk, percentage	34.00%	31.00%
China
Revenue, Major Customer [Line Items]
Concentration risk, percentage	21.00%	18.00%
Malaysia
Revenue, Major Customer [Line Items]
Concentration risk, percentage	7.00%	8.00%
Taiwan
Revenue, Major Customer [Line Items]
Concentration risk, percentage	16.00%	21.00%
Other Asia
Revenue, Major Customer [Line Items]
Concentration risk, percentage	11.00%	6.00%
Total Asia
Revenue, Major Customer [Line Items]
Concentration risk, percentage	55.00%	53.00%
Germany
Revenue, Major Customer [Line Items]
Concentration risk, percentage	1.00%	2.00%
Hungary
Revenue, Major Customer [Line Items]
Concentration risk, percentage		3.00%
Czech Republic
Revenue, Major Customer [Line Items]
Concentration risk, percentage	1.00%	2.00%
Other Europe
Revenue, Major Customer [Line Items]
Concentration risk, percentage	9.00%	9.00%
Total Europe
Revenue, Major Customer [Line Items]
Concentration risk, percentage	11.00%	16.00%

X

- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 42
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-42

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 275
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482861/275-10-50-18

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 275
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482861/275-10-50-18

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 275
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-Name Accounting Standards Codification
-Section 50
-Paragraph 20
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482861/275-10-50-20

Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 275
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482861/275-10-50-18

Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 275
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482861/275-10-50-18

Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 275
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-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482861/275-10-50-18

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- 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

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