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Fair Value Measurements
9 Months Ended
Jun. 30, 2020
Fair Value Disclosures [Abstract]  
Fair Value Measurements Fair Value Measurements
Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date.  A three level fair value hierarchy is used to prioritize the inputs used in valuations, as defined below:

Level 1:   Observable inputs that reflect unadjusted quoted prices for identical assets or liabilities in active markets.
Level 2: Inputs other than quoted prices included within level 1 that are observable for the asset or liability, either   directly or indirectly.
Level 3:   Unobservable inputs for the asset or liability.
Note 4.   Fair Value Measurements (continued)

The fair values of the Company's assets and liabilities measured on a recurring basis are categorized as follows:
 June 30, 2020September 30, 2019
 Level 1Level 2Level 3TotalLevel 1Level 2Level 3Total
Assets:        
Derivatives (1)
$—  $1,244  $—  $1,244  $—  $845  $—  $845  
Equity and fixed income mutual funds—  24,119  —  24,119  —  22,986  —  22,986  
Life insurance policies—  4,100  —  4,100  —  4,030  —  4,030  
Total assets at fair value$—  $29,463  $—  $29,463  $—  $27,861  $—  $27,861  
Liabilities:        
Derivatives (1)
$—  $7,513  $—  $7,513  $—  $1,379  $—  $1,379  
Total liabilities at fair value$—  $7,513  $—  $7,513  $—  $1,379  $—  $1,379  
(1) Interest rate swaps are valued based on observable market swap rates and are classified within Level 2 of the fair value hierarchy.