COMBINED AND CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (Parenthetical) - USD ($)		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Asset optimization revenues - affiliates	[1]	$ 1,494,000	$ 2,318,000	$ 314,000
Asset optimization revenues - affiliates cost of revenues		152,600,000	282,300,000	192,100,000
Retail cost of revenues - affiliates	[2]	241,188,000	258,616,000	233,026,000
General and administrative expense - affiliates	[3]	61,682,000	45,880,000	35,020,000
Affiliated Entity
Retail revenue - affiliates		0	2,170,000	4,022,000
Asset optimization revenues - affiliates		1,101,000	12,842,000	14,940,000
Asset optimization revenues - affiliates cost of revenues		11,285,000	30,910,000	15,928,000
Retail cost of revenues - affiliates		17,000	13,000	55,000
General and administrative expense - affiliates		$ 0	$ 100,000	$ 100,000

[1] Net asset optimization revenues includes asset optimization revenues—affiliates of $1,101, $12,842 and $14,940 for the years ended December 31, 2015, 2014 and 2013, respectively, and asset optimization revenues—affiliates cost of revenues of $11,285, $30,910 and $15,928 for the years ended December 31, 2015, 2014 and 2013, respectively.

[2] Retail cost of revenues includes retail cost of revenues—affiliates of $17, $13 and $55 for the years December 31, 2015, 2014 and 2013, respectively.

[3] General and administrative includes general and administrative expense—affiliates of $0, less than $100 and less than $100 for the years ended December 31, 2015, 2014 and 2013, respectively.