CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 54,466	$ 56,664
Restricted cash	1,005	1,004
Accounts receivable, net of allowance for doubtful accounts of $5,935 at March 31, 2020 and $4,797 at December 31, 2019	79,801	113,635
Accounts receivable—affiliates	2,937	2,032
Inventory	264	2,954
Fair value of derivative assets	15	464
Customer acquisition costs, net	6,759	8,649
Customer relationships, net	12,676	13,607
Deposits	6,327	6,806
Renewable energy credit asset	32,504	24,204
Other current assets	10,161	6,109
Total current assets	206,915	236,128
Property and equipment, net	3,297	3,267
Fair value of derivative assets	0	106
Customer acquisition costs, net	9,072	9,845
Customer relationships, net	14,748	17,767
Deferred tax assets	30,333	29,865
Goodwill	120,343	120,343
Other assets	4,924	5,647
Total assets	389,632	422,968
Current liabilities:
Accounts payable	34,654	48,245
Accounts payable—affiliates	934	1,009
Accrued liabilities	35,891	37,941
Renewable energy credit liability	37,918	33,120
Fair value of derivative liabilities	26,450	19,943
Other current liabilities	1,741	1,697
Total current liabilities	137,588	141,955
Long-term liabilities:
Fair value of derivative liabilities	1,832	495
Long-term portion of Senior Credit Facility	95,000	123,000
Other long-term liabilities	197	217
Total liabilities	234,617	265,667
Commitments and contingencies (Note 12)
Series A Preferred Stock, par value $0.01 per share, 20,000,000 shares authorized, 3,707,256 shares issued and 3,607,571 shares outstanding at March 31, 2020 and 3,707,256 shares issued and 3,677,318 shares outstanding at December 31, 2019	88,282	90,015
Stockholders' equity:
Additional paid-in capital	52,710	51,842
Accumulated other comprehensive (loss) income	(40)	(40)
Retained earnings	814	1,074
Treasury stock, at cost, 99,446 shares at March 31, 2020 and December 31, 2019	(2,011)	(2,011)
Total stockholders' equity	51,827	51,219
Non-controlling interest in Spark HoldCo, LLC	14,906	16,067
Total equity	66,733	67,286
Total liabilities, Series A Preferred Stock and Stockholders' equity	389,632	422,968
Class A common stock, par value $0.01 per share, 120,000,000 shares authorized, 14,494,981 shares issued and 14,395,535 shares outstanding at March 31, 2020 and 14,478,999 shares issued and 14,379,553 shares outstanding at December 31, 2019
Stockholders' equity:
Common Stock	145	145
Class B common stock, par value $0.01 per share, 60,000,000 shares authorized, 20,800,000 shares issued and outstanding at March 31, 2020 and 20,800,000 shares issued and outstanding at December 31, 2019
Stockholders' equity:
Common Stock	$ 209	$ 209