Quarterly report pursuant to Section 13 or 15(d)

Investments (Details)

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Investments (Details) - USD ($)
$ in Thousands
Dec. 31, 2023
Sep. 30, 2023
Non-current investments [Abstract]    
Equity and fixed income mutual funds $ 713 $ 699
Life insurance policies 5,038 4,926
Equity-method investments 350 323
Other (primarily cost-method) investments 19,123 19,040
Total non-current investments $ 25,224 $ 24,988