v3.25.2
Fair Value Measurements (Tables)
9 Months Ended
Jun. 30, 2025
Fair Value Disclosures [Abstract]  
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis The following table sets forth, by level within the fair value hierarchy, the Company's financial assets and liabilities (as applicable) that were accounted for at fair value on a recurring basis as of June 30, 2025 and September 30, 2024.  Financial assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement.  
Recurring Fair Value MeasuresAt fair value as of June 30, 2025
(Thousands of Dollars)   Level 1Level 2Level 3
Netting
Adjustments(1)
Total(1)
Assets:
 
    
Cash Equivalents – Money Market Mutual Funds$26,831 $— $— $— $26,831 
Derivative Financial Instruments:     
Over the Counter Swaps – Gas— 34,445 — (32,440)2,005 
Over the Counter No Cost Collars – Gas— 12,298 — (11,750)548 
Contingent Consideration for Asset Sale— — — — — 
Foreign Currency Contracts— 325 — (484)(159)
Other Investments:     
Balanced Equity Mutual Fund13,143 — — — 13,143 
Fixed Income Mutual Fund16,848 — — — 16,848 
Total$56,822 $47,068 $— $(44,674)$59,216 
Liabilities:     
Derivative Financial Instruments:     
Over the Counter Swaps – Gas$— $62,897 $— $(32,440)$30,457 
Over the Counter No Cost Collars – Gas— 38,513 — (11,750)26,763 
Foreign Currency Contracts— 492 — (484)
Total$— $101,902 $— $(44,674)$57,228 
Total Net Assets/(Liabilities)$56,822 $(54,834)$— $— $1,988 

Recurring Fair Value MeasuresAt fair value as of September 30, 2024
(Thousands of Dollars)   Level 1Level 2Level 3
Netting
Adjustments(1)
Total(1)
Assets:
Cash Equivalents – Money Market Mutual Funds$29,238 $— $— $— $29,238 
Derivative Financial Instruments:
Over the Counter Swaps – Gas— 76,009 — (17,198)58,811 
Over the Counter No Cost Collars – Gas — 32,584 — (3,774)28,810 
Contingent Consideration for Asset Sale— 729 — — 729 
Foreign Currency Contracts— 281 — (726)(445)
Other Investments:
Balanced Equity Mutual Fund19,523 — — — 19,523 
Fixed Income Mutual Fund17,374 — — — 17,374 
Total$66,135 $109,603 $— $(21,698)$154,040 
Liabilities:
Derivative Financial Instruments:
Over the Counter Swaps – Gas$— $22,206 $— $(17,198)$5,008 
Over the Counter No Cost Collars – Gas— 3,501 — (3,774)(273)
Foreign Currency Contracts— 726 — (726)— 
Total$— $26,433 $— $(21,698)$4,735 
Total Net Assets/(Liabilities)$66,135 $83,170 $— $— $149,305 

(1)Netting Adjustments represent the impact of legally-enforceable master netting arrangements that allow the Company to net gain and loss positions held with the same counterparties. The net asset or net liability for each counterparty is recorded as an asset or liability on the Company’s balance sheet.
Fair Value Measurements, Nonrecurring The following table presents impairments of assets associated with certain nonrecurring fair value measurements within Level 3 of the fair value hierarchy as of June 30, 2025 and 2024 (in thousands):
Impairments
Nonrecurring Fair Value MeasuresNine Months Ended June 30,
SegmentDate of MeasurementFair Value20252024
Impairment of Assets:
Water Disposal AssetsExploration and ProductionDecember 31, 2024$12,880 $33,453 $—