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Investments (Tables)
3 Months Ended
Dec. 31, 2020
Investments, Debt and Equity Securities [Abstract]  
Non-Current Investments
Non-current investments consisted of the following:
 December 31, 2020September 30, 2020
Equity and fixed income mutual funds$25,264 $24,610 
Life insurance policies4,724 4,621 
Other (primarily cost-method) investments34,011 34,019 
 $63,999 $63,250