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SEGMENT INFORMATION (Capital expenditures, depreciation and amortization expense by segment) (Details) - USD ($) $ in Thousands | 3 Months Ended
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Dec. 30, 2023 | Dec. 31, 2022
Segment Reporting, Other Significant Reconciling Item [Line Items] |  |
Capital expenditures: | $ 3,533 | $ 15,651
Depreciation and amortization expense: |  |
Depreciation expense: | 6,638 | 4,219
Amortization expense: | 1,347 | 1,394
Ball Bonding Equipment |  |
Segment Reporting, Other Significant Reconciling Item [Line Items] |  |
Capital expenditures: | 396 | 184
Depreciation and amortization expense: |  |
Depreciation expense: | 321 | 376
Amortization expense: | 0 | 0
Wedge Bonding Equipment |  |
Segment Reporting, Other Significant Reconciling Item [Line Items] |  |
Capital expenditures: | 14 | 185
Depreciation and amortization expense: |  |
Depreciation expense: | 284 | 275
Amortization expense: | 0 | 0
Advanced Solutions |  |
Segment Reporting, Other Significant Reconciling Item [Line Items] |  |
Capital expenditures: | 244 | 11,707
Depreciation and amortization expense: |  |
Depreciation expense: | 3,047 | 618
Amortization expense: | 0 | 0
APS |  |
Segment Reporting, Other Significant Reconciling Item [Line Items] |  |
Capital expenditures: | 425 | 1,325
Depreciation and amortization expense: |  |
Depreciation expense: | 1,323 | 1,609
Amortization expense: | 226 | 359
All Others |  |
Segment Reporting, Other Significant Reconciling Item [Line Items] |  |
Capital expenditures: | 141 | 166
Depreciation and amortization expense: |  |
Depreciation expense: | 380 | 269
Amortization expense: | 1,029 | 943
Corporate Expenses |  |
Segment Reporting, Other Significant Reconciling Item [Line Items] |  |
Capital expenditures: | 2,313 | 2,084
Depreciation and amortization expense: |  |
Depreciation expense: | 1,283 | 1,072
Amortization expense: | $ 92 | $ 92

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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482686/350-30-45-2 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482665/350-30-50-2 + Details
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- Definition The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482099/360-10-50-1 + Details
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- References No definition available. + Details
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- Definition Amount of acquisition of long-lived, physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
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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 No definition available. + Details
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