Debt Instrument, Exercise of Conversion Rights, Term

No definition available.

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- Definition

Line of Credit Facility, Minimum Borrowing Capacity

+ References

No definition available.

+ Details

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- Definition

Face amount or stated value per share of common stock.

+ 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 210.5-02.29)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 30

-Article 5

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- Definition

Including the current and noncurrent portions, carrying amount of debt identified as being convertible into another form of financial instrument (typically the entity's common stock) as of the balance sheet date, which originally required full repayment more than twelve months after issuance or greater than the normal operating cycle of the company.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.16(a)(2))

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.16)

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 20, 22

-Article 5

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of a favorable spread to a debt holder between the amount of debt being converted and the value of the securities received upon conversion. This is an embedded conversion feature of convertible debt issued that is in-the-money at the commitment date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21538-112644

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Beneficial Conversion Feature

-URI http://asc.fasb.org/extlink&oid=6505963

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The price per share of the conversion feature embedded in the debt instrument.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 470

-SubTopic 20

-Section 50

-Paragraph 5

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6928298&loc=SL6031898-161870

+ Details

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ 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

Per share or per unit amount of equity securities issued.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	instant

- Details

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- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_ConvertibleDebtMember
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- Details

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- Details

Name:	us-gaap_DebtInstrumentAxis=spke_OasisPowerHoldingsConvertibleDebtMember
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- Details

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Debt Convertible Notes (Details) - USD ($)	Jul. 31, 2015	Jul. 08, 2015	Sep. 30, 2015	May. 12, 2015	Dec. 31, 2014	Aug. 01, 2014
Senior Secured Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit facility, minimum borrowing capacity		$ 5,000,000.0
Convertible Debt \| Censtar Convertible Debt
Debt Instrument [Line Items]
Stated percentage interest rate		5.00%
Exercise of conversion rights term		18 months
Convertible Debt \| Oasis Power Holdings Convertible Debt
Debt Instrument [Line Items]
Stated percentage interest rate	5.00%
Conversion price per share				$ 14.00
Exercise of conversion rights term	18 months
Beneficial conversion feature	$ 800,000
Common Class B
Debt Instrument [Line Items]
Common stock, par value	$ 0.01	$ 0.01	$ 0.01		$ 0.01	$ 0.01
Common Class B \| Convertible Debt \| Censtar Convertible Debt
Debt Instrument [Line Items]
Conversion price per share		$ 16.57
Common Class B \| Convertible Debt \| Oasis Power Holdings Convertible Debt
Debt Instrument [Line Items]
Conversion price per share	14.00
Common Class A
Debt Instrument [Line Items]
Common stock, par value			$ 0.01		$ 0.01
Shares issued, price per share	$ 16.21
CenStar \| Convertible Debt \| Censtar Convertible Debt
Debt Instrument [Line Items]
Convertible debt		$ 2,100,000
Oasis Power Holdings \| Convertible Debt \| Oasis Power Holdings Convertible Debt
Debt Instrument [Line Items]
Convertible debt	$ 5,000,000