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Derivatives and Hedging-Disclosures and Fair Value Measurements (Tables) | 9 Months Ended
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Jun. 30, 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 June 30, 2020 |
Commodity contracts |  | Fair liability value of derivative instruments |  | $ | 22,715 |  |  | $ | — |  |  | $ | 22,715 |
Commodity contracts |  | Long-term derivative liabilities included in the deferred charges and other assets, net and other long-term liabilities, net balances |  |  | 1,576 |  |  |  | — |  |  |  | 1,576 |
Commodity contract assets at June 30, 2020 |  | $ | 24,291 |  |  | $ | — |  |  | $ | 24,291 |
Liability Derivatives at June 30, 2020 |
Commodity contracts |  | Fair liability value of derivative instruments |  | $ | (33,210 | ) |  | $ | — |  |  | $ | (33,210 | )
Commodity contracts |  | Long-term derivative liabilities included in the deferred charges and other assets, net and other long-term liabilities, net balances |  |  | (1,214 | ) |  |  | — |  |  |  | (1,214 | )
Commodity contract liabilities at June 30, 2020 |  | $ | (34,424 | ) |  | $ | — |  |  | $ | (34,424 | )
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 |  | $ | 1,576 |  |  | $ | (1,174 | ) |  | $ | 402 |  |  | $ | — |  |  | $ | — |  |  | $ | 402 |
Fair liability value of derivative instruments |  |  | 22,715 |  |  |  | (33,210 | ) |  |  | (10,495 | ) |  |  | — |  |  |  | — |  |  |  | (10,495 | )
Long-term derivative liabilities included in other long-term liabilities, net |  |  | — |  |  |  | (40 | ) |  |  | (40 | ) |  |  | — |  |  |  | — |  |  |  | (40 | )
Total at June 30, 2020 |  | $ | 24,291 |  |  | $ | (34,424 | ) |  | $ | (10,133 | ) |  | $ | — |  |  | $ | — |  |  | $ | (10,133 | )
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 |  | $ | 1,576 |  |  | $ | (1,174 | ) |  | $ | 402 |  |  | $ | — |  |  | $ | — |  |  | $ | 402 |
Fair liability value of derivative instruments |  |  | 22,715 |  |  |  | (33,210 | ) |  |  | (10,495 | ) |  |  | — |  |  |  | — |  |  |  | (10,495 | )
Long-term derivative liabilities included in other long-term liabilities, net |  |  | — |  |  |  | (40 | ) |  |  | (40 | ) |  |  | — |  |  |  | — |  |  |  | (40 | )
Total at June 30, 2020 |  | $ | 24,291 |  |  | $ | (34,424 | ) |  | $ | (10,133 | ) |  | $ | — |  |  | $ | — |  |  | $ | (10,133 | )
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 June 30, 2020 |  |  | Three Months Ended June 30, 2019 |  |  | Nine Months Ended June 30, 2020 |  |  | Nine Months Ended June 30, 2019 |
Commodity contracts |  | Cost of product (a) |  | $ | 4,681 |  |  | $ | 558 |  |  | $ | 7,030 |  |  | $ | 8,751 |
Commodity contracts |  | Cost of installations and service (a) |  | $ | 282 |  |  | $ | 79 |  |  | $ | 506 |  |  | $ | 729 |
Commodity contracts |  | Delivery and branch expenses (a) |  | $ | 664 |  |  | $ | 75 |  |  | $ | 1,261 |  |  | $ | 512 |
Commodity contracts |  | (Increase) / decrease in the fair value of derivative instruments (b) |  | $ | (3,279 | ) |  | $ | 1,630 |  |  | $ | 1,974 |  |  | $ | 19,268 |
(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.

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