SEGMENT INFORMATION (Capital expenditures, depreciation and amortization expense by segment) (Details) - USD ($) $ in Thousands	3 Months Ended
	Jan. 03, 2026	Dec. 28, 2024
Segment Reporting, Other Significant Reconciling Item [Line Items]
Capital expenditures:	$ 2,069	$ 2,111
Depreciation and amortization expense:
Depreciation expense:	3,651	3,767
Amortization expense:	308	1,246
Ball Bonding Equipment
Segment Reporting, Other Significant Reconciling Item [Line Items]
Capital expenditures:	35	7
Depreciation and amortization expense:
Depreciation expense:	275	332
Amortization expense:	0	0
Wedge Bonding Equipment
Segment Reporting, Other Significant Reconciling Item [Line Items]
Capital expenditures:	76	35
Depreciation and amortization expense:
Depreciation expense:	227	227
Amortization expense:	0	0
Advanced Solutions
Segment Reporting, Other Significant Reconciling Item [Line Items]
Capital expenditures:	0	78
Depreciation and amortization expense:
Depreciation expense:	261	235
Amortization expense:	0	0
APS
Segment Reporting, Other Significant Reconciling Item [Line Items]
Capital expenditures:	749	307
Depreciation and amortization expense:
Depreciation expense:	1,199	1,397
Amortization expense:	0	0
All Others
Segment Reporting, Other Significant Reconciling Item [Line Items]
Capital expenditures:	5	225
Depreciation and amortization expense:
Depreciation expense:	282	330
Amortization expense:	216	1,154
Corporate Expenses
Segment Reporting, Other Significant Reconciling Item [Line Items]
Capital expenditures:	1,204	1,459
Depreciation and amortization expense:
Depreciation expense:	1,407	1,246
Amortization expense:	$ 92	$ 92