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Derivative Activities - Additional Information (Detail) | Jun. 30, 2017 USD ($) t_per_M MMBTU bbl
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Derivatives Excluding Basis Swaps and Freight Swaps |
Derivative [Line Items] |
Derivative assets liabilities at fair value net | $ 99,800,000
Commodity | Basis Swaps | Natural Gas |
Derivative [Line Items] |
Derivative assets liabilities at fair value net | $ (10,500,000)
Volume Hedged | MMBTU | 71,212,500
Commodity | Spread Swaps | Propane |
Derivative [Line Items] |
Derivative assets liabilities at fair value net | $ 2,600,000
Commodity | Swaps | Freight |
Derivative [Line Items] |
Derivative assets liabilities at fair value net | $ 109,000
Volume Hedged | t_per_M | 5,000
2017 Commodity Contract | Spread Swaps | Propane |
Derivative [Line Items] |
Volume Hedged | bbl | 910,500
2018 Commodity Contract | Spread Swaps | Propane |
Derivative [Line Items] |
Volume Hedged | bbl | 750,000

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- Definition Aggregate notional amount of derivative expressed in nonmonetary units. For example, the number of barrels specified in a fuel oil forward purchase contract. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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- Definition The sum of the notional amount of derivative over the life of the entire contract, expressed in nonmonetary units. For example, the total number of British Thermal Unit (BTU) specified in a fuel oil forward purchase contract. + References No definition available. + Details
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- Definition Fair values as of the balance sheet date of the net amount of all assets and liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958 + Details
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