Debt - Pacific Summit Energy LLC (Details) $ in Thousands	6 Months Ended
Jun. 30, 2017 USD ($) trade_credit_arrangement	Dec. 31, 2016 USD ($)
Debt Instrument [Line Items]
Total current debt	$ 7,500	$ 73,370
Current portion of note payable	0	15,501
Trade Credit Arrangements With Pacific Summit Energy LLC
Debt Instrument [Line Items]
Total current debt	$ 0	$ 15,501
Trade Credit Arrangements With Pacific Summit Energy LLC \| Major Energy Companies
Debt Instrument [Line Items]
Number of trade credit arrangements \| trade_credit_arrangement	3
Interest rate	4.00%
Trade Credit Arrangements With Pacific Summit Energy LLC \| Major Energy Companies \| LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate	300.00%

Debt Instrument, Number of Arrangements

No definition available.

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

+ Details

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- Definition

Sum of the carrying values as of the balance sheet date of the portions of long-term notes payable due within one year or the operating cycle if longer.

+ References

+ Details

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- Details

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- Details

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- Details

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