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

6 Months Ended

Mar. 31, 2024

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 March 31, 2024
Commodity contracts	Fair asset and liability value of derivative instruments	$	7,671		$	—	$	7,671
Commodity contracts	Long-term derivative assets included in the deferred charges and other assets, net and other long-term liabilities, net balances		490			—		490
Commodity contract assets at March 31, 2024		$	8,161		$	—	$	8,161
Liability Derivatives at March 31, 2024
Commodity contracts	Fair asset and liability value of derivative instruments	$	(9,638	)	$	—	$	(9,638	)
Commodity contracts	Long-term derivative liabilities included in the deferred charges and other assets, net and other long-term liabilities, net balances		(491	)		—		(491	)
Commodity contract liabilities at March 31, 2024		$	(10,129	)	$	—	$	(10,129	)
Asset Derivatives at September 30, 2023
Commodity contracts	Fair asset and liability value of derivative instruments	$	17,891		$	—	$	17,891
Commodity contracts	Long-term derivative assets included in the deferred charges and other assets, net and other long-term liabilities, net balances		779			—		779
Commodity contract assets September 30, 2023		$	18,670		$	—	$	18,670
Liability Derivatives at September 30, 2023
Commodity contracts	Fair asset and liability value of derivative instruments	$	(7,349	)	$	—	$	(7,349	)
Commodity contracts	Long-term derivative liabilities included in the deferred charges and other assets, net and other long-term liabilities, net balances		(679	)		—		(679	)
Commodity contract liabilities September 30, 2023		$	(8,028	)	$	—	$	(8,028	)

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
Fair asset value of derivative instruments	$	1,951	$	(1,729	)	$	222		$	—	$	—	$	222
Long-term derivative assets included in deferred charges and other assets, net		124		(84	)		40			—		—		40
Fair liability value of derivative instruments		5,720		(7,909	)		(2,189	)		—		—		(2,189	)
Long-term derivative liabilities included in other long-term liabilities, net		366		(407	)		(41	)		—		—		(41	)
Total at March 31, 2024	$	8,161	$	(10,129	)	$	(1,968	)	$	—	$	—	$	(1,968	)
Fair asset value of derivative instruments	$	17,815	$	(7,155	)	$	10,660		$	—	$	—	$	10,660
Long-term derivative assets included in deferred charges and other assets, net		567		(452	)		115			—		—		115
Fair liability value of derivative instruments		76		(194	)		(118	)		—		—		(118	)
Long-term derivative liabilities included in other long-term liabilities, net		212		(227	)		(15	)		—		—		(15	)
Total at September 30, 2023	$	18,670	$	(8,028	)	$	10,642		$	—	$	—	$	10,642

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 March 31, 2024			Three Months Ended March 31, 2023		Six Months Ended March 31, 2024			Six Months Ended March 31, 2023
Commodity contracts	Cost of product (a)	$	13,386		$	13,954	$	18,109		$	5,012
Commodity contracts	Cost of installations and service (a)	$	(55	)	$	39	$	(41	)	$	79
Commodity contracts	Delivery and branch expenses (a)	$	(517	)	$	349	$	(909	)	$	149
Commodity contracts	(Increase) / decrease in the fair  value of derivative instruments (b)	$	(11,752	)	$	3,022	$	7,278		$	20,658

(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.