v3.26.1
SEGMENT INFORMATION (Operating information by segment) (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Jul. 04, 2026
Jun. 28, 2025
Jul. 04, 2026
Jun. 28, 2025
Segment Reporting [Line Items]        
Net revenue $ 330,409 $ 148,413 $ 772,655 $ 476,523
Cost of sales 172,460 79,170 396,047 279,812
Selling, general and administrative 45,769 39,596 129,270 90,054
Research and development 43,914 35,741 122,686 110,769
Operating expenses 89,683 75,337 251,956 200,823
Income / (Loss) from operations 68,266 (6,094) 124,652 (4,112)
Operating segments        
Segment Reporting [Line Items]        
Net revenue 93,837 25,254 197,901 168,506
Income / (Loss) from operations 68,266 (6,094) 124,652 (4,112)
Ball Bonding Equipment        
Segment Reporting [Line Items]        
Net revenue 226,068 75,990 496,557 201,957
Cost of sales 111,462 37,386 249,207 101,014
Selling, general and administrative 9,600 5,930 24,287 16,538
Research and development 11,799 9,194 32,210 28,202
Operating expenses 21,399 15,124 56,497 44,740
Income / (Loss) from operations 93,207 23,480 190,853 56,203
Wedge Bonding Equipment        
Segment Reporting [Line Items]        
Net revenue 25,777 22,126 59,968 90,546
Cost of sales 14,786 12,577 34,961 50,528
Selling, general and administrative 2,591 2,077 7,185 6,102
Research and development 6,918 5,407 19,314 16,235
Operating expenses 9,509 7,484 26,499 22,337
Income / (Loss) from operations 1,482 2,065 (1,492) 17,681
Advanced Solutions        
Segment Reporting [Line Items]        
Net revenue 29,415 10,811 71,119 56,627
Cost of sales 19,204 5,751 39,176 19,420
Selling, general and administrative 4,765 3,888 13,727 (61,154)
Research and development 17,999 11,864 47,371 36,608
Operating expenses 22,764 15,752 61,098 (24,546)
Income / (Loss) from operations (12,553) (10,692) (29,155) 61,753
Recovery of direct costs       71,100
Gain (loss) from litigation settlement       1,700
Other selling, general and administrative expense       11,600
APS        
Segment Reporting [Line Items]        
Net revenue 35,772 31,392 110,090 95,124
Cost of sales 17,522 15,599 53,611 45,950
Selling, general and administrative 3,339 3,067 9,798 8,887
Research and development 3,210 2,325 8,986 7,418
Operating expenses 6,549 5,392 18,784 16,305
Income / (Loss) from operations 11,701 10,401 37,695 32,869
All Others        
Segment Reporting [Line Items]        
Net revenue 13,377 8,094 34,921 32,269
Cost of sales 9,456 7,852 19,033 62,884
Selling, general and administrative 2,100 4,348 9,570 52,885
Research and development 2,265 5,128 7,694 16,702
Operating expenses 4,365 9,476 17,264 69,587
Income / (Loss) from operations (444) (9,234) (1,376) (100,202)
Unallocated Corporate Expenses        
Segment Reporting [Line Items]        
Net revenue 0 0 0 0
Cost of sales 30 5 59 16
Selling, general and administrative 23,374 20,286 64,703 66,796
Research and development 1,723 1,823 7,111 5,604
Operating expenses 25,097 22,109 71,814 72,400
Income / (Loss) from operations $ (25,127) $ (22,114) $ (71,873) $ (72,416)