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Fair Value Measurements (Tables)
 9 Months Ended
Jun. 30, 2022
Fair Value Disclosures [Abstract]  
Fair Value of Assets and Liabilities Measured on a Recurring Basis
The fair values of the Company's assets and liabilities measured on a recurring basis are categorized as follows:
 June 30, 2022September 30, 2021
 Level 1Level 2Level 3TotalLevel 1Level 2Level 3Total
Assets:        
Derivatives (1)
$— $18,941 $— $18,941 $— $209 $— $209 
Equity and fixed income mutual funds— 5,543 — 5,543 — 6,936 — 6,936 
Life insurance policies— 4,437 — 4,437 — 4,626 — 4,626 
Total assets at fair value$— $28,921 $— $28,921 $— $11,771 $— $11,771 
Liabilities:        
Derivatives (1)
$— $— $— $— $— $2,232 $— $2,232 
Total liabilities at fair value$— $— $— $— $— $2,232 $— $2,232 
(1) Interest rate swaps and cross currency swaps are valued based on observable market swap rates and are classified within Level 2 of the fair value hierarchy.