Fair Value Measurements (Financial Assets and Liabilities) (Details) - Fair Value, Inputs, Level 3 - USD ($) $ in Thousands	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration fair value	$ 0	$ 0	$ 0	$ 6,200	$ 6,200	$ 6,200
Total liabilities measured at fair value	$ 0		$ 0