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Fair Value Measurements
6 Months Ended
Mar. 31, 2020
Fair Value Disclosures [Abstract]  
Fair Value Measurements Fair Value Measurements
The following table presents the Company’s liabilities measured at fair value on a recurring basis as of March 31, 2020 and September 30, 2019 under ASC 820 (in thousands):

March 31, 2020September 30, 2019
(unaudited)
Level 2Level 2
Liabilities
Commodity swaps$797  $—  
Interest rate swaps1,777  311  
Derivative liabilities included in Level 2 include commodity and interest rate swap contracts. The fair values of our Level 2 derivative liabilities were determined using market observable inputs including forward and spot prices for commodities and interest rate curves.