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Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Liabilities Long Term Debt

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Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Notes Payable

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Due from Affiliate, Noncurrent, Secured By Property, Plant, And Equipment

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Due from Affiliate, Noncurrent, Unsecured

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Equity Method Investments, Number of Purchase Agreements

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Investments in parties associated with the reporting entity net of guarantees to be paid by the reporting entity (which are included as liabilities on the balance sheet).

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The maximum exposure to loss (i.e. risk) to the reporting entity should the affiliates (the parties associated with the reporting entity) become unable to continue operations.

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The amount of net investments in, and advances to unconsolidated affiliates reported by an equity method investment of the entity.

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Amounts due from parties associated with the reporting entity as evidenced by a written promise to pay.

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Number of Investments Owned

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Percentage of voting equity interests acquired at the acquisition date in the business combination.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount of tangible or intangible assets, including a business or subsidiary of the acquirer transferred by the entity to the former owners of the acquiree. Excludes cash.

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Amount of capital lease obligation, assumed at the acquisition date.

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Amount of assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer, acquired at the acquisition date.

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Amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired at the acquisition date.

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Amount of liabilities due within one year or within the normal operating cycle, if longer, assumed at the acquisition date.

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Amount of intangible assets, excluding goodwill, acquired at the acquisition date.

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The amount of inventory recognized as of the acquisition date.

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Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the aggregate liabilities assumed.

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Amount of assets expected to be realized or consumed after one year or the normal operating cycle, if longer, acquired at the acquisition date.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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AFFILIATIONS, DISCONTINUED OPERATIONS AND RELATED-PARTY TRANSACTIONS - AFFILIATIONS (Details) $ in Thousands		12 Months Ended
	Dec. 31, 2015 USD ($) agreement investment	Dec. 31, 2017 USD ($) mi	Dec. 31, 2016 USD ($)	Sep. 30, 2017	Dec. 31, 2011
Affiliations [Abstract]
Notes receivable from affiliate		$ 18,200	$ 15,700
Notes receivable from affiliate, current		$ 4,913	2,461
Length of natural gas pipeline (in miles) \| mi		100
Net investments in unconsolidated affiliates		$ 32,100	7,500
Notes receivable secured by property, plant, and equipment of affiliates		$ 13,600
Interest accrual on secured notes receivable		7.50%
Unsecured notes receivable		$ 4,600
Net asset - included in investment in affiliates and other noncurrent liabilities		62,300
Combined equity contributions and the notes receivable - affiliate		80,500
Equity Method Investment, Summarized Financial Information [Abstract]
Goodwill	$ 8,880	$ 3,578	4,838
Energenic
Affiliations [Abstract]
Equity interest					50.00%
Potato Creek
Affiliations [Abstract]
Equity interest		30.00%
PennEast
Affiliations [Abstract]
Length of natural gas pipeline (in miles) \| mi		118
Millennium Account Services, LLC
Affiliations [Abstract]
Equity interest				50.00%
Marina Energy LLC \| Energenic
Affiliations [Abstract]
Equity interest		50.00%
Number of distribution and purchase agreements \| agreement	2
Number of investments owned \| investment	8
Notes receivable from affiliate	$ 19,500
Notes receivable from affiliate, current			$ 1,500
Percentage of fair value of assets acquired and liabilities assumed	100.00%
Consideration received	$ 46,000
Fair value of the interest in Partner Projects exchanged	14,500
Equity Method Investment, Summarized Financial Information [Abstract]
Current assets (excluding inventory)	7,804
Inventory	3,154
Note Receivable Received	19,504
Fixed Assets	46,460
Identifiable Intangibles	16,950
Goodwill	4,838
Noncurrent assets	4,783
Current liabilities	(8,196)
Note Payable - Affiliate	(16,986)
Long-Term Debt, including current portion	(21,642)
Capital Lease Payable	(10,458)
Other Non-Current Liabilities	(181)
Fair Value of Consolidated Assets and Liabilities of Acquired Projects	$ 46,030
Marina Energy LLC \| Energenic \| Co-venturer
Affiliations [Abstract]
Number of investments owned \| investment	7
Fair value of the interest in Partner Projects exchanged	$ 31,500
Midstream \| PennEast
Affiliations [Abstract]
Equity interest		20.00%