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

6 Months Ended

Mar. 31, 2020

Derivative Instruments And Hedging Activities Disclosure [Abstract]

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

The Company’s 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, 2020
Commodity contracts	Fair liability value of derivative instruments	$	35,497		$	—	$	35,497
Commodity contracts	Long-term derivative liabilities included in the deferred charges and other assets, net and other long-term liabilities, net balances		1,673			—		1,673
Commodity contract assets at March 31, 2020		$	37,170		$	—	$	37,170
Liability Derivatives at March 31, 2020
Commodity contracts	Fair liability value of derivative instruments	$	(49,514	)	$	—	$	(49,514	)
Commodity contracts	Long-term derivative liabilities included in the deferred charges and other assets, net and other long-term liabilities, net balances		(1,867	)		—		(1,867	)
Commodity contract liabilities at March 31, 2020		$	(51,381	)	$	—	$	(51,381	)
Asset Derivatives at September 30, 2019
Commodity contracts	Fair liability value of derivative instruments	$	13,824		$	—	$	13,824
Commodity contracts	Long-term derivative assets included in the deferred charges and other assets, net balance and other long term liabilities, net		1,466			—		1,466
Commodity contract assets September 30, 2019		$	15,290		$	—	$	15,290
Liability Derivatives at September 30, 2019
Commodity contracts	Fair liability value of derivative instruments	$	(22,086	)	$	—	$	(22,086	)
Commodity contracts	Long-term derivative liabilities included in the deferred charges and other assets, net balance and other long term liabilities, net		(1,719	)		—		(1,719	)
Commodity contract liabilities September 30, 2019		$	(23,805	)	$	—	$	(23,805	)

Company's Derivatives Assets (Liabilities) Offset by Counterparty

The Company’s 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	$	615	$	(559	)	$	56		$	—	$	—	$	56
Fair liability value of derivative instruments		35,497		(49,514	)		(14,017	)		—		—		(14,017	)
Long-term derivative liabilities included in other long-term liabilities, net		1,058		(1,308	)		(250	)		—		—		(250	)
Total at March 31, 2020	$	37,170	$	(51,381	)	$	(14,211	)	$	—	$	—	$	(14,211	)
Long-term derivative assets included in other long-term assets, net	$	16	$	(16	)	$	—		$	—	$	—	$	—
Fair liability value of derivative instruments		13,824		(22,086	)		(8,262	)		—		—		(8,262	)
Long-term derivative liabilities included in other long-term liabilities, net		1,450		(1,703	)		(253	)		—		—		(253	)
Total at September 30, 2019	$	15,290	$	(23,805	)	$	(8,515	)	$	—	$	—	$	(8,515	)

Company's Derivatives Assets (Liabilities) Offset by Counterparty

The Company’s 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	$	615	$	(559	)	$	56		$	—	$	—	$	56
Fair liability value of derivative instruments		35,497		(49,514	)		(14,017	)		—		—		(14,017	)
Long-term derivative liabilities included in other long-term liabilities, net		1,058		(1,308	)		(250	)		—		—		(250	)
Total at March 31, 2020	$	37,170	$	(51,381	)	$	(14,211	)	$	—	$	—	$	(14,211	)
Long-term derivative assets included in other long-term assets, net	$	16	$	(16	)	$	—		$	—	$	—	$	—
Fair liability value of derivative instruments		13,824		(22,086	)		(8,262	)		—		—		(8,262	)
Long-term derivative liabilities included in other long-term liabilities, net		1,450		(1,703	)		(253	)		—		—		(253	)
Total at September 30, 2019	$	15,290	$	(23,805	)	$	(8,515	)	$	—	$	—	$	(8,515	)

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, 2020			Three Months Ended March 31, 2019			Six Months Ended March 31, 2020		Six Months Ended March 31, 2019
Commodity contracts	Cost of product (a)	$	(3,700	)	$	14,345		$	2,349	$	8,193
Commodity contracts	Cost of installations and service (a)	$	233		$	403		$	224	$	650
Commodity contracts	Delivery and branch expenses (a)	$	626		$	271		$	597	$	437
Commodity contracts	(Increase) / decrease in the fair value of derivative instruments (b)	$	11,670		$	(13,401	)	$	5,253	$	17,638

(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.