Derivatives and Hedging-Disclosures and Fair Value Measurements (Tables)

9 Months Ended

Jun. 30, 2025

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Company's Commodity Financial Assets and Liabilities Measured at Fair Value on Recurring Basis

The Company’s commodity financial assets and liabilities measured at fair value on a recurring basis are listed on the following table.

(In thousands)					Fair Value Measurements at Reporting Date Using:
Derivatives Not Designated    as Hedging Instruments					Quoted Prices in Active Markets for Identical Assets		Significant Other Observable Inputs
Under FASB ASC 815-10	Balance Sheet Location	Total			Level 1		Level 2
Asset Derivatives at June 30, 2025
Commodity contracts	Fair liability value of derivative instruments	$	7,165		$	—	$	7,165
Commodity contracts	Long-term derivative assets included in the deferred charges and other assets, net		563			—		563
Commodity contract assets at June 30, 2025		$	7,728		$	—	$	7,728
Liability Derivatives at June 30, 2025
Commodity contracts	Fair liability value of derivative instruments	$	(8,769	)	$	—	$	(8,769	)
Commodity contracts	Long-term derivative assets included in the deferred charges and other assets, net		(486	)		—		(486	)
Commodity contract liabilities at June 30, 2025		$	(9,255	)	$	—	$	(9,255	)
Asset Derivatives at September 30, 2024
Commodity contracts	Fair liability value of derivative instruments	$	16,948		$	—	$	16,948
Commodity contracts	Long-term derivative assets included in the deferred charges and other assets, net and other long-term liabilities, net balances		831			—		831
Commodity contract assets September 30, 2024		$	17,779		$	—	$	17,779
Liability Derivatives at September 30, 2024
Commodity contracts	Fair liability value of derivative instruments	$	(30,919	)	$	—	$	(30,919	)
Commodity contracts	Long-term derivative liabilities included in the deferred charges and other assets, net and other long-term liabilities, net balances		(965	)		—		(965	)
Commodity contract liabilities September 30, 2024		$	(31,884	)	$	—	$	(31,884	)

Company's Commodity Derivatives Assets (Liabilities) Offset by Counterparty

The Company’s commodity derivative assets (liabilities) offset by counterparty and subject to an enforceable master netting arrangement are listed on the following table.

(In thousands)									Gross Amounts Not Offset in the Statement of Financial Position
Offsetting of Financial Assets (Liabilities)    and Derivative Assets (Liabilities)	Gross Assets Recognized		Gross Liabilities Offset in the Statement of Financial Position			Net Assets (Liabilities) Presented in the Statement of Financial Position			Financial Instruments		Cash Collateral Received		Net Amount
Long-term derivative assets included in deferred charges and other assets, net	$	563	$	(486	)	$	77		$	—	$	—	$	77
Fair liability value of derivative instruments		7,165		(8,769	)	$	(1,604	)		—		—		(1,604	)
Total at June 30, 2025	$	7,728	$	(9,255	)	$	(1,527	)	$	—	$	—	$	(1,527	)
Long-term derivative assets included in deferred charges and other assets, net	$	5	$	(3	)	$	2		$	—	$	—	$	2
Fair liability value of derivative instruments		16,948		(30,919	)		(13,971	)		—		—		(13,971	)
Long-term derivative liabilities included in other long-term liabilities, net		826		(962	)		(136	)		—		—		(136	)
Total at September 30, 2024	$	17,779	$	(31,884	)	$	(14,105	)	$	—	$	—	$	(14,105	)

Company's Effect on Derivative Instruments on the Statement of Operations

(In thousands)
The Effect of Derivative Instruments on the Statement of Operations
		Amount of (Gain) or Loss Recognized						Amount of (Gain) or Loss Recognized
Derivatives Not Designated as Hedging Instruments Under FASB ASC 815-10	Location of (Gain) or Loss Recognized in Income on Derivative	Three Months Ended June 30, 2025			Three Months Ended June 30, 2024			Nine Months Ended June 30, 2025			Nine Months Ended June 30, 2024
Commodity contracts	Cost of product (a)	$	2,248		$	2,323		$	16,002		$	20,432
Commodity contracts	Cost of installations and service (a)	$	40		$	(133	)	$	171		$	(174	)
Commodity contracts	Delivery and branch expenses (a)	$	234		$	(20	)	$	890		$	(929	)
Commodity contracts	(Increase) / decrease in the fair  value of derivative instruments (b)	$	(603	)	$	984		$	(11,962	)	$	8,262

(a)Represents realized closed positions and includes the cost of options as they expire.

(b)Represents the change in value of unrealized open positions and expired options.