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

12 Months Ended

Sep. 30, 2017

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 Under FASB ASC 815-10	Balance Sheet Location	Total			Quoted Prices in Active Markets for Identical Assets Level 1			Significant Other Observable Inputs Level 2
Asset Derivatives at September 30, 2017
Commodity contracts	Fair asset and fair liability value of derivative instruments	$	7,729		$	—		$	7,729
Commodity contracts	Long-term derivative assets included in the deferred charges and other assets, net balance		996			—			996
Commodity contract assets at September 30, 2017		$	8,725		$	—		$	8,725
Liability Derivatives at September 30, 2017
Commodity contracts	Fair liability and fair asset value of derivative instruments	$	(2,086	)	$	—		$	(2,086	)
Commodity contracts	Cash collateral		—			—			—
Commodity contracts	Long-term derivative liabilities included in the deferred charges and other assets, net and other long-term liabilities balances		(731	)		—			(731	)
Commodity contract liabilities at September 30, 2017		$	(2,817	)	$	—		$	(2,817	)
Asset Derivatives at September 30, 2016
Commodity contracts	Fair asset and fair liability value of derivative instruments	$	11,692		$	—		$	11,692
Commodity contracts	Long-term derivative assets included in the other long-term liabilities balance		1,369			481			888
Commodity contract assets at September 30, 2016		$	13,061		$	481		$	12,580
Liability Derivatives at September 30, 2016
Commodity contracts	Fair liability and fair asset value of derivative instruments	$	(9,990	)	$	(1,603	)	$	(8,387	)
Commodity contracts	Cash collateral		—			—			—
Commodity contracts	Long-term derivative liabilities included in the other long-term liabilities balance		(565	)		(484	)		(81	)
Commodity contract liabilities at September 30, 2016			$(10,555)			$(2,087)			$(8,468)

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
Fair asset value of derivative instruments	$	6,023	$	(91	)	$	5,932		$	—	$	—	$	5,932
Long-term derivative assets included in other long-term assets, net		996		(730	)		266			—		—		266
Fair liability value of derivative instruments		1,706		(1,995	)		(289	)		—		—		(289	)
Long-term derivative liabilities included in other long-term liabilities, net		—		(1	)		(1	)		—		—		(1	)
Total at September 30, 2017	$	8,725	$	(2,817	)	$	5,908		$	—	$	—	$	5,908
Fair asset value of derivative instruments	$	7,716	$	(3,729	)	$	3,987		$	—	$	—	$	3,987
Long-term derivative assets included in other long-term assets, net		888		(81	)		807			—		—		807
Fair liability value of derivative instruments		3,976		(6,261	)		(2,285	)		—		—		(2,285	)
Long-term derivative liabilities included in other long-term liabilities, net		481		(484	)		(3	)		—		—		(3	)
Total at September 30, 2016	$	13,061	$	(10,555	)	$	2,506		$	—	$	—	$	2,506

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
Fair asset value of derivative instruments	$	6,023	$	(91	)	$	5,932		$	—	$	—	$	5,932
Long-term derivative assets included in other long-term assets, net		996		(730	)		266			—		—		266
Fair liability value of derivative instruments		1,706		(1,995	)		(289	)		—		—		(289	)
Long-term derivative liabilities included in other long-term liabilities, net		—		(1	)		(1	)		—		—		(1	)
Total at September 30, 2017	$	8,725	$	(2,817	)	$	5,908		$	—	$	—	$	5,908
Fair asset value of derivative instruments	$	7,716	$	(3,729	)	$	3,987		$	—	$	—	$	3,987
Long-term derivative assets included in other long-term assets, net		888		(81	)		807			—		—		807
Fair liability value of derivative instruments		3,976		(6,261	)		(2,285	)		—		—		(2,285	)
Long-term derivative liabilities included in other long-term liabilities, net		481		(484	)		(3	)		—		—		(3	)
Total at September 30, 2016	$	13,061	$	(10,555	)	$	2,506		$	—	$	—	$	2,506

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 Years Ended September 30,
Derivatives Not Designated as Hedging Instruments Under FASB ASC 815-10	Location of (Gain) or Loss Recognized in Income on Derivative	2017			2016			2015
Commodity contracts	Cost of product (a)	$	6,386		$	16,977		$	13,368
Commodity contracts	Cost of installations and service (a)	$	(526	)	$	949		$	1,831
Commodity contracts	Delivery and branch expenses (a)	$	(422	)	$	2,405		$	2,098
Commodity contracts	(Increase) / decrease in the fair value of derivative instruments (b)	$	(2,193	)	$	(18,217	)	$	4,187

(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.