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Derivative Accounting - Derivative Instruments in the Balance Sheets (Details) - USD ($) | Jun. 30, 2020 | Dec. 31, 2019
--- | --- | ---
Assets |  |
Gross Recognized Derivatives | $ 740,000 | $ 515,000
Liabilities |  |
Amount Reported on Balance Sheets | (70,986,000) | (72,132,000)
Commodity Contracts |  |
Assets |  |
Gross Recognized Derivatives | 3,529,000 |
Amounts Offset | (2,789,000) |
Net Recognized Derivatives | 740,000 |
Other | 0 | 405,000
Amount Reported on Balance Sheets | 740,000 |
Liabilities |  |
Gross Recognized Derivatives | (72,590,000) | (71,421,000)
Amounts Offset | 2,789,000 | 474,000
Net Recognized Derivatives | (69,801,000) | (70,947,000)
Other | (1,185,000) | (1,185,000)
Amount Reported on Balance Sheets | (70,986,000) | (72,132,000)
Assets and Liabilities |  |
Gross Recognized Derivatives | (69,061,000) | (70,837,000)
Amounts Offset | 0 | 0
Net Recognized Derivatives | (69,061,000) | (70,837,000)
Other | (1,185,000) | (780,000)
Amount Reported on Balance Sheets | (70,246,000) | (71,617,000)
Cash collateral received from counterparties | 1,185,000 | 1,185,000
Commodity Contracts | Current assets |  |
Assets |  |
Gross Recognized Derivatives | 2,989,000 | 584,000
Amounts Offset | (2,279,000) | (474,000)
Net Recognized Derivatives | 710,000 | 110,000
Other | 0 | 405,000
Amount Reported on Balance Sheets | 710,000 | 515,000
Commodity Contracts | Investments and other assets |  |
Assets |  |
Gross Recognized Derivatives | 540,000 |
Amounts Offset | (510,000) |
Net Recognized Derivatives | 30,000 |
Other | 0 |
Amount Reported on Balance Sheets | 30,000 |
Commodity Contracts | Current liabilities |  |
Liabilities |  |
Gross Recognized Derivatives | (45,899,000) | (38,235,000)
Amounts Offset | 2,279,000 | 474,000
Net Recognized Derivatives | (43,620,000) | (37,761,000)
Other | (1,185,000) | (1,185,000)
Amount Reported on Balance Sheets | (44,805,000) | (38,946,000)
Assets and Liabilities |  |
Cash collateral received from counterparties | 1,185,000 | 1,185,000
Commodity Contracts | Deferred credits and other |  |
Liabilities |  |
Gross Recognized Derivatives | (26,691,000) | (33,186,000)
Amounts Offset | 510,000 | 0
Net Recognized Derivatives | (26,181,000) | (33,186,000)
Other | 0 | 0
Amount Reported on Balance Sheets | (26,181,000) | (33,186,000)
Assets and Liabilities |  |
Cash collateral received from counterparties | $ 0 | $ 0

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