CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Cash flows from operating activities:
Net income (loss)	$ (38,816)	$ (64,964)	$ 3,871
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	8,544	7,653	7,303
Goodwill impairment	5,133	37,688	0
Intangible asset impairment	9,014	0	0
Provision for bad debt	241	346	344
Provision for customer credits	217	247	592
Share-based compensation	4,866	4,103	4,412
Write-down of assets	0	8	115
Long-lived asset impairment	1,968	0	0
Gain on sale of business	0	0	(2,183)
(Gain)/loss on long-term strategic investment	(25)	580	777
Change in deferred tax assets	692	25,264	1,994
Changes in assets and liabilities:
Accounts receivable	(1,445)	7,130	(3,229)
Prepaid expenses and other current assets	814	(904)	(402)
Other non-current assets	(278)	200	946
Accounts payable	3,825	(2,681)	2,121
Accrued expenses and other current liabilities	2,330	(3,182)	1,581
Net cash provided by (used in) operating activities	(2,920)	11,488	18,242
Cash flows from investing activities:
Purchases of property and equipment	(896)	(1,799)	(2,148)
Purchase of intangible assets	0	(8,600)	0
Proceeds from sale of investment	125	0	0
Investment in GoMoto	0	0	(375)
Change in short-term investment	0	(3)	(251)
Net cash used in investing activities	(771)	(10,402)	(2,774)
Cash flows from financing activities:
Payments on revolving credit facility	(8,000)	0	0
Repurchase of common stock	0	(1,897)	0
Proceeds from issuance of common stock	200	0	0
Payments on term loan borrowings	0	(14,063)	(3,937)
Net proceeds from stock option exercises	98	1,355	3,051
Payment of contingent fee arrangement	0	0	(63)
Net cash (used in) provided by financing activities	(7,702)	(14,605)	(949)
Net increase (decrease) in cash and cash equivalents	(11,393)	(13,519)	14,519
Cash and cash equivalents, beginning of period	24,993	38,512	23,993
Cash and cash equivalents, end of period	13,600	24,993	38,512
Supplemental disclosure of cash flow information:
Cash paid for income taxes	4	650	760
Cash refunds for income taxes	223	0	0
Cash paid for interest	118	948	717
Supplemental schedule of non-cash investing and financing activities:
DealerX contingent consideration	0	2,470	0
Sale of specialty finance leads product	$ 0	$ 0	$ 3,168