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Summary Of Significant Accounting Policies - Narrative (Details) $ in Millions	12 Months Ended
	Sep. 30, 2025 USD ($) segment	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)
Segment Reporting [Abstract]
Number of Reportable Segments | segment	1
Advertising
Advertising Expense | $	$ 6.2	$ 5.4	$ 8.9
Restricted Stock Units (RSUs) [Member]
Restricted Stock Award
Award vesting period	2 years	2 years	2 years
Restricted Stock Units (RSUs) [Member] | Annual Equity Program [Member]
Restricted Stock Award
Percentage Of Annual Performance Stock Grant Based On Achieving Annual Revenue Goal	50.00%
Percentage Of Annual Performance Stock Grant Based On Achieving Earnings Per Share Goal	25.00%
Percentage Of Annual Performance Stock Grant Based On Achieving Relative Total Shareholder Return Benchmarked to the S&P 500 Index Goal	25.00%
Percentage Of Over-Achievement To Which Annual Performance Based Vesting Cannot Exceed	200.00%
Maintenance [Member]
Revenue Recognition
Capitalized Contract Cost, Amortization Period	4 years 6 months
Subscription and Circulation [Member]
Revenue Recognition
Capitalized Contract Cost, Amortization Period	3 years
Hardware [Member]
Guarantees and Product Warranties
Standard Product Warranty Description	one year
Minimum
Property, Plant and Equipment [Abstract]
Property and equipment, useful life	3 years
Finite-Lived Intangible Assets, Gross [Abstract]
Finite-Lived Intangible Asset, Useful Life	4 years
Revenue Recognition
Revenue, Performance Obligation, Description of Payment Terms	30
Restricted Stock Award
Award vesting period	1 year
Minimum | Software and Software Development Costs [Member]
Finite-Lived Intangible Assets, Gross [Abstract]
Finite-Lived Intangible Asset, Useful Life	3 years
Maximum
Property, Plant and Equipment [Abstract]
Property and equipment, useful life	5 years
Finite-Lived Intangible Assets, Gross [Abstract]
Finite-Lived Intangible Asset, Useful Life	15 years
Revenue Recognition
Revenue, Performance Obligation, Description of Payment Terms	60
Restricted Stock Award
Award vesting period	4 years
Maximum | Software and Software Development Costs [Member]
Finite-Lived Intangible Assets, Gross [Abstract]
Finite-Lived Intangible Asset, Useful Life	10 years

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