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Goodwill and Other Identifiable Intangible Assets, Net (Tables)
 6 Months Ended
Mar. 31, 2025
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Amortizable Intangible Assets
Amortizable intangible assets were (in thousands):
 March 31, 2025September 30, 2024
Gross
carrying
amount		Accum.
amort.		NetGross
carrying
amount		Accum.
amort.		Net
Purchased and core technology$84,928 $(65,448)$19,480 $85,041 $(63,654)$21,387 
License agreements112 (112)— 112 (112)— 
Patents and trademarks40,714 (23,684)17,030 40,335 (22,047)18,288 
Customer relationships309,173 (103,617)205,556 309,223 (95,989)213,234 
Non-compete agreements600 (600)— 600 (600)— 
Order backlog1,000 (1,000)— 1,000 (1,000)— 
Total$436,527 $(194,461)$242,066 $436,311 $(183,402)$252,909 
Schedule of Estimated Future Amortization Expense Related to Intangible Assets
Estimated amortization expense related to intangible assets for the remainder of fiscal 2025 and the five succeeding fiscal years is (in thousands):
2025 (six months)$10,381 
202620,709 
202720,709 
202820,447 
202918,701 
203018,297 
Schedule of Changes in Carrying Amount of Goodwill
The changes in the carrying amount of goodwill by reportable segments are (in thousands):
 Six months ended March 31, 2025
 IoT
Products & Services		IoT
Solutions		Total
Balance on September 30, 2024$175,093 $167,681 $342,774 
Foreign currency translation adjustment(525)(580)(1,105)
Balance on March 31, 2025$174,568 $167,101 $341,669