XML 50 R35.htm IDEA: XBRL DOCUMENT
v3.6.0.2

Stock-Based Compensation (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2016
Restricted Stock Units |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Schedule of Share-based Compensation, Restricted Stock Units Award Activity | The following table summarizes equity classified restricted stock unit activity and unvested restricted stock units for the year ended December 31, 2016:
| Number of Shares (in thousands) | Weighted Average Grant Date Fair Value
Unvested at December 31, 2015 | 285 |  | $ | 16.33 |
Granted | 153 |  | 29.77 |
Dividend reinvestment issuances | 13 |  | 26.84 |
Vested | (115 | ) | 27.66 |
Forfeited | (73 | ) | 18.47 |
Unvested at December 31, 2016 | 263 |  | $ | 19.13 |
Restricted Stock Units, Liability Awards |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Schedule of Share-based Compensation, Restricted Stock Units Award Activity | The following table summarizes liability classified restricted stock unit activity and unvested restricted stock units for the year ended December 31, 2016:
| Number of Shares (in thousands) | Weighted Average Reporting Date Fair Value
Unvested at December 31, 2015 | 100 |  | $ | 20.72 |
Granted | 106 |  | 30.30 |
Dividend reinvestment issuances | 7 |  | 30.30 |
Vested | (82 | ) | 27.18 |
Forfeited | (5 | ) | 30.30 |
Unvested at December 31, 2016 | 126 |  | $ | 30.30 |

X
- Definition Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationRestrictedStockUnitsAwardActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- 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
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_RestrictedStockUnitsRSUMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=spke_RestrictedStockUnitsLiabilityAwardsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |