Selected Balance Sheet Accounts (Details) (USD $)	0 Months Ended	12 Months Ended				12 Months Ended			12 Months Ended		12 Months Ended		12 Months Ended		12 Months Ended		12 Months Ended		12 Months Ended		12 Months Ended		1 Months Ended		12 Months Ended
	Sep. 17, 2010	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Oct. 01, 2013	Dec. 31, 2013 Revolving Credit Facility [Member]	Dec. 31, 2013 Trademarks/trade names [Member]	Dec. 31, 2012 Trademarks/trade names [Member]	Dec. 31, 2013 Software and publications [Member]	Dec. 31, 2012 Software and publications [Member]	Dec. 31, 2013 Customer Relationships [Member]	Dec. 31, 2012 Customer Relationships [Member]	Dec. 31, 2013 Employment/non-compete agreements [Member]	Dec. 31, 2012 Employment/non-compete agreements [Member]	Dec. 31, 2013 Developed Technology [Member]	Dec. 31, 2012 Developed Technology [Member]	Dec. 31, 2013 Minimum [Member]	Dec. 31, 2013 Minimum [Member] Revolving Credit Facility [Member]	Dec. 31, 2013 Maximum [Member]	Dec. 31, 2013 Maximum [Member] Revolving Credit Facility [Member]	Dec. 31, 2013 Other Income [Member]	Dec. 31, 2013 Reduction to Investments [Member]	Aug. 31, 2010 Driverside Investment [Member]	Aug. 16, 2010 Driverside Investment [Member]	Dec. 31, 2013 AutoWeb [Member]	Dec. 31, 2013 Computer Software and Hardware and Capitalized Internal Use Software [Member]	Dec. 31, 2012 Computer Software and Hardware and Capitalized Internal Use Software [Member]	Dec. 31, 2013 Leasehold Improvements [Member]	Dec. 31, 2012 Leasehold Improvements [Member]	Dec. 31, 2013 Furniture and Equipment [Member]	Dec. 31, 2012 Furniture and Equipment [Member]
Property and Equipment [Abstract]
Computer software and hardware and capitalized internal use software																										$ 11,924,000	$ 11,729,000
Furniture and equipment																														1,256,000	1,252,000
Leasehold improvements																												937,000	892,000
Total		14,117,000	13,873,000
Less - Accumulated depreciation and amortization		(12,569,000)	(12,280,000)
Property and equipment, net		1,548,000	1,593,000
Capitalized internal use software, net of amortization		600,000	800,000
Depreciation and amortization expense related to property and equipment		700,000	800,000
Cost of revenues		200,000	200,000
Operating expenses		500,000	600,000
Investments [Abstract]
Cost method investment ownership percentage (in hundredths)																								5.00%	16.00%
Investments recorded at cost																								1,000,000
Additional investments acquired			16,737
Preferred stock acquired (in shares)																							1,352,082		8,000
Cash acquired from merger			823,000
Contingent payments received		326,000																			132,000	194,000
Other income received																									108,000
Investment in AutoWeb		2,500,000	0																						2,500,000
SaleMove convertible promissory note																									150,000
Annual interest rate (in hundredths)	6.00%																								6.00%
Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired				4,500,000
Estimated Useful Life (in years)							5 years		3 years		3 years		5 years		5 years		3 years		5 years
Intangible Assets, Gross		10,632,000	9,210,000				5,582,000	5,540,000	1,300,000	1,300,000	2,320,000	1,870,000	610,000	500,000	820,000	0
Intangible Assets, Accumulated Amortization		(8,811,000)	(7,671,000)				(5,209,000)	(5,023,000)	(1,300,000)	(992,000)	(1,926,000)	(1,427,000)	(335,000)	(229,000)	(41,000)	0
Intangible Assets, Net		1,821,000	1,539,000				373,000	517,000	0	308,000	394,000	443,000	275,000	271,000	779,000	0
Amortization expense for the remainder of the year and for the next four years [Abstract]
2013		700,000
2014		567,000
2015		195,000
2016		191,000
2017		144,000
Total		1,797,000
Goodwill		11,677,000			1,900,000
Goodwill, Period Increase (Decrease)		1,925,000
Goodwill	11,700,000	13,602,000	11,677,000		1,900,000
Accrued expenses and other current liabilities [Abstract]
Compensation and related costs and professional fees		3,540,000	2,006,000
Other accrued expenses		3,209,000	2,847,000
Amounts due to customers		208,000	149,000
Other current liabilities		692,000	375,000
Total accrued expenses and other current liabilities		7,649,000	5,377,000
Debt Instrument [Line Items]
Face amount of debt	5,000,000
Fair value of note at acquisition	5,900,000
Market yield (in hundredths)	15.00%
Stock price volatility (in hundredths)	77.50%
Annual interest rate (in hundredths)	6.00%																								6.00%
Note maturity date		Sep. 30, 2015
Minimum share increments (in shares)		40,000
Conversion price (in dollars per share)	$ 4.65
Interest payable on note in case of default (in hundredths)		8.00%
Maximum borrowing capacity						8,000,000
Debt Instrument, Basis Spread on Variable Rate																		0.50%		1.50%
Commitment fee (in hundredths)						0.10%
Outstanding balance						$ 4,250,000