Selected Balance Sheet Accounts (Details Narrative) - USD ($) $ / shares in Units, $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Property, Plant and Equipment [Line Items]
Intangible assets acquired in business acquisitions	$ 38,100
Sales Revenue Net [Member]
Property, Plant and Equipment [Line Items]
Concentration risk	27.00%	29.00%
Accounts Receivable [Member]
Property, Plant and Equipment [Line Items]
Concentration risk	43.00%	37.00%
Concentration risk, amount	$ 12,800	$ 10,300
Auto USA Note [Member]
Property, Plant and Equipment [Line Items]
Fair value of note	$ 1,300
Market yield (in hundredths)	1.60%
Convertible subordinated promissory note issued	$ 1,000
Stock price volatility (in hundredths)	65.00%
Interest is payable at an annual interest rate (in hundredths)	6.00%
Lower interest rate of note payable	8.00%
Note maturity date	Jan. 31, 2019
Date after which notes can be converted	Jan. 31, 2017
Shares issued upon conversion of note	30,600
Shares issued upon conversion of note price per share	$ 16.34