CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($)	Sep. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 42,796,000	$ 29,419,000
Accounts receivable, net of allowance for doubtful accounts of $4,324 at September 30 and $4,023 at December 31	134,183,000	158,814,000
Accounts receivable—affiliates	3,807,000	3,661,000
Inventory	4,077,000	4,470,000
Fair value of derivative assets	23,427,000	31,191,000
Customer acquisition costs, net	15,600,000	22,123,000
Customer relationships, net	18,360,000	18,653,000
Deposits	12,631,000	7,701,000
Other current assets	31,074,000	20,706,000
Total current assets	285,955,000	296,738,000
Property and equipment, net	5,383,000	8,275,000
Fair value of derivative assets	1,873,000	3,309,000
Customer acquisition costs, net	3,466,000	6,949,000
Customer relationships, net	28,247,000	34,839,000
Deferred tax assets	24,935,000	24,185,000
Goodwill	120,343,000	120,154,000
Other assets	11,075,000	11,500,000
Total assets	481,277,000	505,949,000
Current liabilities:
Accounts payable	55,496,000	77,510,000
Accounts payable—affiliates	2,836,000	4,622,000
Accrued liabilities	45,518,000	33,679,000
Fair value of derivative liabilities	269,000	1,637,000
Current portion of Senior Credit Facility	0	7,500,000
Current payable pursuant to tax receivable agreement—affiliates	2,508,000	5,937,000
Current contingent consideration for acquisitions	2,980,000	4,024,000
Other current liabilities	856,000	2,675,000
Current portion of note payable	10,535,000	13,443,000
Total current liabilities	120,998,000	151,027,000
Long-term liabilities:
Fair value of derivative liabilities	489,000	492,000
Payable pursuant to tax receivable agreement—affiliates	26,067,000	26,355,000
Long-term portion of Senior Credit Facility	112,000,000	117,750,000
Subordinated debt—affiliate	10,000,000	0
Long-term portion of note payable	0	7,051,000
Contingent consideration for acquisitions	0	626,000
Other long-term liabilities	0	172,000
Total liabilities	269,554,000	303,473,000
Commitments and contingencies (Note 13)
Series A Preferred Stock, par value $0.01 per share, 20,000,000 shares authorized, 3,707,256 shares issued and outstanding at September 30 and 1,704,339 shares issued and outstanding at December 31	90,758,000	41,173,000
Additional paid-in capital	25,387,000	26,914,000
Accumulated other comprehensive loss	(15,000)	(11,000)
Retained earnings	2,885,000	11,008,000
Treasury stock, at cost, 99,446 shares at September 30 and December 31	(2,011,000)	(2,011,000)
Total stockholders' equity	26,597,000	36,248,000
Non-controlling interest in Spark HoldCo, LLC	94,368,000	125,055,000
Total equity	120,965,000	161,303,000
Total liabilities, Series A Preferred Stock and stockholders' equity	481,277,000	505,949,000
Class A Common Stock
Common stock	135,000	132,000
Class B Common Stock
Common stock	$ 216,000	$ 216,000