Auto Data, Inc. (Narrative) (Details) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Auto Data, Inc. [Abstract]
Purchase price earn-out percent based on segment contracts			3.00%
Period of purchase price earn out payments (in years)			5 years
Purchase price earn-out as percent of segment contracts with continued occupancy of building			4.00%
Amount due from ADI due to earn-out			$ 11,000		$ 0
Other income under the earn out agreement	$ 3,000	$ 2,000	$ 11,000	$ 9,000