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Goodwill and other Identifiable Intangible Assets (Tables)
 12 Months Ended
Sep. 30, 2023
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Amortizable Identifiable Intangible Assets
Amortizable identifiable intangible assets, net as of September 30, 2023 and 2022 were comprised of the following (in thousands):
 September 30, 2023September 30, 2022
Gross
carrying
amount		Accum.
amort.		NetGross
carrying
amount		Accum.
amort.		Net
Purchased and core technology$85,032 $(59,833)$25,199 $85,016 $(55,854)$29,162 
License agreements112 (112)— 112 (112)— 
Patents and trademarks39,957 (19,888)20,069 39,711 (17,666)22,045 
Customer relationships309,196 (77,380)231,816 309,212 (58,355)250,857 
Non-compete agreements600 (600)— 600 (600)— 
Order backlog1,000 (1,000)— 1,000 (1,000)— 
Total$435,897 $(158,813)$277,084 $435,651 $(133,587)$302,064 
Schedule of Amortization Expense
Amortization expense for fiscal years 2023, 2022 and 2021 was as follows (in thousands):
Fiscal yearTotal
2023$25,226 
2022$27,195 
2021$16,534 
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
2024 (twelve months)$25,232 
2025$21,776 
2026$21,544 
2027$20,593 
2028$20,411 
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, 2021$175,180 $50,342 $225,522 
Acquisitions— 118,635 118,635 
Adjustments186 (631)(445)
Foreign currency translation adjustment(2,435)(800)(3,235)
Balance on September 30, 2022$172,931 $167,546 $340,477 
Foreign currency translation adjustment1,026 90 1,116 
Balance on September 30, 2023$173,957 $167,636 $341,593