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Derivative Activities - Additional Information (Detail) $ in Thousands | Jun. 30, 2020 USD ($) MMBTU bbl
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Derivatives Excluding Basis Swaps and Freight Swaps |
Derivative [Line Items] |
Derivative assets liabilities at fair value net | $ 139,300
Commodity | Natural Gas Basis Swaps |
Derivative [Line Items] |
Derivative assets liabilities at fair value net | $ 4,500
Volume Hedged | MMBTU | 147,550,000
Commodity | Propane Spread Swaps |
Derivative [Line Items] |
Derivative assets liabilities at fair value net | $ 1,000
Volume Hedged | bbl | 687,500
Commodity | Swaps |
Derivative [Line Items] |
Derivative assets liabilities at fair value net | $ 0
Freight | Swaps |
Derivative [Line Items] |
Derivative assets liabilities at fair value net | 0
Freight | Swaps | Level 2 |
Derivative [Line Items] |
Derivative assets liabilities at fair value net | $ (5,000)

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