Revenue (Schedule of Uncollectible Amounts And Change in Expected Allowance for Credit Losses for Trade Accounts Receivable and Unbilled Receivables) (Details) - USD ($) $ in Thousands		3 Months Ended
		Dec. 31, 2024	Dec. 31, 2023
Revenue from Contract with Customer [Abstract]
Balance, beginning		$ 7,738	$ 5,847
Changes in estimates		207	298
Write-offs			(459)
Other	[1]	(152)	91
Balance, ending		$ 7,793	$ 5,777

[1] Includes effects of foreign exchange rate changes during the period.