Subsequent Events	3 Months Ended
Mar. 31, 2017
Subsequent Events [Abstract]
Subsequent Events	15. Subsequent Events Pacific Summit Energy LLC On September 27, 2016, we notified Pacific Summit of our election to trigger the expiration of these arrangements as of March 31, 2017. On March 31, 2017, the Pacific Summit arrangements were terminated and the credit requirements of the Major Energy Companies are now being funded from our working capital. Acquisition of Perigee On April 1, 2017, the Company and Spark HoldCo entered into an agreement with NG&E for the acquisition of approximately 19,000 RCEs and the membership interests of Perigee Energy, LLC ("Perigee"), a Texas limited liability company, and simultaneously exercised an option to acquire an additional 41,000 RCEs from a third party in connection with the acquisition. The acquisition was approved by a special committee of the Board of Directors. The Company paid approximately $2.2 million in cash, subject to working capital adjustments as consideration for the Perigee Acquisition. Declaration of Dividends On April 19, 2017, the Company declared a quarterly dividend of $0.3625 to holders of record of our Class A common stock on May 30, 2017 and payable on June 14, 2017. On April 19, 2017, the Company declared an initial cash dividend for the period from the date of issuance of the Series A Preferred Stock through June 30, 2017 in the amount of $0.72917 per share of Series A Preferred Stock. The dividend will be paid on July 15, 2017 to holders of record on July 1, 2017 of Spark's Class A Preferred Stock. The Company anticipates Series A Preferred Stock dividends paid and declared of $1.85 per share or $3.0 million for the year ended December 31, 2017 based on the Series A Preferred Stock outstanding as of March 31, 2017. Verde Membership Interest and Stock Purchase Agreement On May 5, 2017, the Company and CenStar Energy Corp. entered into a Membership Interest and Stock Purchase Agreement (the “Verde Purchase Agreement”) with Verde Energy USA Holdings, LLC (the “Seller”), as a seller of all interests in and to the Seller's operating companies (the “Verde Companies”). Pursuant to the terms of the Verde Purchase Agreement, CenStar Energy Corp. has agreed to purchase, and the Seller has agreed to sell, all of the outstanding membership interests and stock in the Verde Companies. The Company acts as a guarantor of the obligations of CenStar Energy Corp. under the Verde Purchase Agreement.

15. Subsequent Events

Pacific Summit Energy LLC

On September 27, 2016, we notified Pacific Summit of our election to trigger the expiration of these arrangements as of March 31, 2017. On March 31, 2017, the Pacific Summit arrangements were terminated and the credit requirements of the Major Energy Companies are now being funded from our working capital.

Acquisition of Perigee

On April 1, 2017, the Company and Spark HoldCo entered into an agreement with NG&E for the acquisition of approximately 19,000 RCEs and the membership interests of Perigee Energy, LLC ("Perigee"), a Texas limited liability company, and simultaneously exercised an option to acquire an additional 41,000 RCEs from a third party in connection with the acquisition. The acquisition was approved by a special committee of the Board of Directors. The Company paid approximately $2.2 million in cash, subject to working capital adjustments as consideration for the Perigee Acquisition.

Declaration of Dividends

On April 19, 2017, the Company declared a quarterly dividend of $0.3625 to holders of record of our Class A common stock on May 30, 2017 and payable on June 14, 2017.

On April 19, 2017, the Company declared an initial cash dividend for the period from the date of issuance of the Series A Preferred Stock through June 30, 2017 in the amount of $0.72917 per share of Series A Preferred Stock. The dividend will be paid on July 15, 2017 to holders of record on July 1, 2017 of Spark's Class A Preferred Stock. The Company anticipates Series A Preferred Stock dividends paid and declared of $1.85 per share or $3.0 million for the year ended December 31, 2017 based on the Series A Preferred Stock outstanding as of March 31, 2017.

Verde Membership Interest and Stock Purchase Agreement

On May 5, 2017, the Company and CenStar Energy Corp. entered into a Membership Interest and Stock Purchase Agreement (the “Verde Purchase Agreement”) with Verde Energy USA Holdings, LLC (the “Seller”), as a seller of all interests in and to the Seller's operating companies (the “Verde Companies”). Pursuant to the terms of the Verde Purchase Agreement, CenStar Energy Corp. has agreed to purchase, and the Seller has agreed to sell, all of the outstanding membership interests and stock in the Verde Companies. The Company acts as a guarantor of the obligations of CenStar Energy Corp. under the Verde Purchase Agreement.