v3.26.1
BUSINESS SEGMENT INFORMATION (Details)
$ in Thousands
 3 Months Ended 6 Months Ended
Mar. 31, 2026
USD ($)
Mar. 31, 2025
USD ($)
Mar. 31, 2026
USD ($)
segment
Mar. 31, 2025
USD ($)
Sep. 30, 2025
USD ($)
Business Segment Information          
Number of reportable segments | segment     3    
Net sales $ 309,341 $ 231,777 $ 599,000 $ 446,370  
Cost of sales 178,026 132,504 347,766 256,718  
SG&A expense 62,830 54,294 124,037 109,263  
Amortization of intangible assets 20,420 7,989 40,744 15,982  
Other expense (income), net 1,802 375 1,832 (262)  
Earnings before income taxes 43,864 34,420 79,342 60,217  
Depreciation and amortization 26,837 13,070 53,330 26,041  
Segment Assets 2,405,805 1,696,162 2,405,805 1,696,162 $ 2,410,388
Capital expenditures 7,232 9,572 13,134 14,864  
Reconciliation of segment profit to Earnings before Income Taxes          
Unallocated amortization of intangible assets 20,420 7,989 40,744 15,982  
Interest expense, net (2,399) (2,195) (5,279) (4,452)  
Earnings before Income Taxes 43,864 34,420 79,342 60,217  
Depreciation, Depletion and Amortization 26,837 13,070 53,330 26,041  
Accumulated depreciation 197,427 26,041 197,427 26,041 186,796
Reconciliation of segment assets to consolidated totals          
Segment assets 2,405,805 1,696,162 2,405,805 1,696,162 2,410,388
Goodwill not allocated to segments 761,181   761,181   761,931
Acquired intangible assets not allocated to segments 682,372   682,372   723,973
Reconciliation of segment capital expenditures to consolidated totals          
Segment Capital Expenditures 7,232 9,572 13,134 14,864  
Operating Segments          
Business Segment Information          
Net sales 309,341 231,777 599,000 446,370  
Segment profit (loss) 74,226 51,365 139,784 93,728  
Depreciation and amortization 9,056 8,054 17,874 15,967  
Segment Assets 879,135 737,426 879,135 737,426  
Capital expenditures 7,222 8,720 13,077 14,012  
Reconciliation of segment profit to Earnings before Income Taxes          
Segment profit total from above 74,226 51,365 139,784 93,728  
Depreciation, Depletion and Amortization 9,056 8,054 17,874 15,967  
Accumulated depreciation   15,967   15,967  
Reconciliation of segment assets to consolidated totals          
Segment assets 879,135 737,426 879,135 737,426  
Goodwill not allocated to segments 761,200   761,200   761,900
Reconciliation of segment capital expenditures to consolidated totals          
Segment Capital Expenditures 7,222 8,720 13,077 14,012  
Corporate          
Business Segment Information          
Amortization of intangible assets (17,716) (5,189) (35,327) (10,275)  
Depreciation and amortization 17,781 5,016 35,456    
Capital expenditures 10 852 57 852  
Reconciliation of segment profit to Earnings before Income Taxes          
Unallocated Corporate SG&A and Other expense (income), net (10,247) (9,561) (19,836) (18,784)  
Unallocated amortization of intangible assets (17,716) (5,189) (35,327) (10,275)  
Interest expense, net (2,399) (2,195) (5,279) (4,452)  
Depreciation, Depletion and Amortization 17,781 5,016 35,456    
Accumulated depreciation   10,074   10,074  
Reconciliation of segment assets to consolidated totals          
Goodwill not allocated to segments 761,181 526,258 761,181 526,258  
Acquired intangible assets not allocated to segments 639,574 348,607 639,574 348,607  
Other unallocated amounts 125,915 83,871 125,915 83,871  
Reconciliation of segment capital expenditures to consolidated totals          
Segment Capital Expenditures 10 852 57 852  
A&D          
Business Segment Information          
Net sales 150,310 89,627 294,139 171,495  
A&D | Operating Segments          
Business Segment Information          
Net sales 150,310 89,627 294,139 171,495  
Cost of sales 90,200 54,603 180,271 108,116  
SG&A expense 16,976 10,594 32,509 21,462  
Amortization of intangible assets 161 328 316 541  
Other expense (income), net 6 (115) 89 (293)  
Segment profit (loss) 42,967 24,217 80,954 41,669  
Depreciation and amortization 3,465 2,836 6,747 5,486  
Segment Assets 402,119 283,061 402,119 283,061  
Capital expenditures 5,542 3,489 9,454 5,922  
Reconciliation of segment profit to Earnings before Income Taxes          
Segment profit total from above 42,967 24,217 80,954 41,669  
Unallocated amortization of intangible assets 161 328 316 541  
Depreciation, Depletion and Amortization 3,465 2,836 6,747 5,486  
Reconciliation of segment assets to consolidated totals          
Segment assets 402,119 283,061 402,119 283,061  
Goodwill not allocated to segments 335,800   335,800   334,000
Reconciliation of segment capital expenditures to consolidated totals          
Segment Capital Expenditures 5,542 3,489 9,454 5,922  
USG          
Business Segment Information          
Net sales 93,529 90,767 181,013 177,427  
USG | Operating Segments          
Business Segment Information          
Net sales 93,529 90,767 181,013 177,427  
Cost of sales 43,343 43,422 83,273 82,760  
SG&A expense 24,871 24,343 50,914 50,259  
Amortization of intangible assets 2,035 2,018 4,078 4,090  
Other expense (income), net 794 205 733 (950)  
Segment profit (loss) 22,486 20,779 42,015 41,268  
Depreciation and amortization 4,126 3,864 8,206 7,752  
Segment Assets 280,735 280,884 280,735 280,884  
Capital expenditures 1,062 3,596 2,632 5,585  
Reconciliation of segment profit to Earnings before Income Taxes          
Segment profit total from above 22,486 20,779 42,015 41,268  
Unallocated amortization of intangible assets 2,035 2,018 4,078 4,090  
Depreciation, Depletion and Amortization 4,126 3,864 8,206 7,752  
Reconciliation of segment assets to consolidated totals          
Segment assets 280,735 280,884 280,735 280,884  
Goodwill not allocated to segments 358,500   358,500   360,100
Reconciliation of segment capital expenditures to consolidated totals          
Segment Capital Expenditures 1,062 3,596 2,632 5,585  
Test          
Business Segment Information          
Net sales 65,502 51,383 123,848 97,448  
Reconciliation of segment assets to consolidated totals          
Goodwill not allocated to segments 66,900   66,900   $ 67,800
Test | Operating Segments          
Business Segment Information          
Net sales 65,502 51,383 123,848 97,448  
Cost of sales 44,482 34,609 84,221 65,972  
SG&A expense 10,235 9,699 19,887 18,749  
Amortization of intangible assets 508 454 1,022 1,076  
Other expense (income), net 1,504 252 1,903 860  
Segment profit (loss) 8,773 6,369 16,815 10,791  
Depreciation and amortization 1,465 1,354 2,921 2,729  
Segment Assets 196,281 173,481 196,281 173,481  
Capital expenditures 618 1,635 991 2,505  
Reconciliation of segment profit to Earnings before Income Taxes          
Segment profit total from above 8,773 6,369 16,815 10,791  
Unallocated amortization of intangible assets 508 454 1,022 1,076  
Depreciation, Depletion and Amortization 1,465 1,354 2,921 2,729  
Reconciliation of segment assets to consolidated totals          
Segment assets 196,281 173,481 196,281 173,481  
Reconciliation of segment capital expenditures to consolidated totals          
Segment Capital Expenditures $ 618 $ 1,635 $ 991 $ 2,505