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Goodwill and other Identifiable Intangible Assets (Tables)
 12 Months Ended
Sep. 30, 2025
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Amortizable Identifiable Intangible Assets
Amortizable identifiable intangible assets, net as of September 30, 2025 and 2024 were comprised of the following (in thousands):
 September 30, 2025September 30, 2024
Gross
carrying
amount		Accum.
amort.		NetGross
carrying
amount		Accum.
amort.		Net
Purchased and core technology$100,986 $(67,533)$33,453 $85,041 $(63,654)$21,387 
License agreements112 (112)— 112 (112)— 
Patents and trademarks45,468 (24,870)20,598 40,335 (22,047)18,288 
Customer relationships408,198 (111,561)296,637 309,223 (95,989)213,234 
Non-compete agreements600 (600)— 600 (600)— 
Order backlog1,000 (1,000)— 1,000 (1,000)— 
Total$556,364 $(205,676)$350,688 $436,311 $(183,402)$252,909 
Schedule of Amortization Expense
Amortization expense for fiscal years 2025, 2024 and 2023 was as follows (in thousands):
Fiscal yearTotal
2025$22,141 
202424,552 
2023$25,226 
Schedule of Estimated Future Amortization Expense Related to Identifiable Intangible Assets
Estimated amortization expense for the next five fiscal years is as follows (in thousands):
Fiscal yearTotal
2026$28,504 
202728,504 
202828,296 
202926,412 
2030$26,009 
Schedule of Changes in Carrying Amount of Goodwill
The changes in the carrying amount of goodwill by reportable segments are (in thousands):
 IoT
Products & Services		IoT
Solutions		Total
Balance on September 30, 2023$173,957 $167,636 $341,593 
Foreign currency translation adjustment1,136 45 1,181 
Balance on September 30, 2024$175,093 $167,681 $342,774 
Acquisition— 50,209 50,209 
Foreign currency translation adjustment173 (284)(111)
Balance on September 30, 2025$175,266 $217,606 $392,872