Note 13 - Subsequent Events (Details) (USD $)	9 Months Ended		0 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Oct. 25, 2013 Subsequent Event [Member] Sale of Unimproved Land [Member] acre	Oct. 07, 2013 Subsequent Event [Member] Stockton Nissan Kia, Stockton California [Member]	Oct. 25, 2013 Subsequent Event [Member] Fresno Lincoln Volvo, Fresno California [Member]	Nov. 22, 2013 Subsequent Event [Member]	Oct. 21, 2013 Subsequent Event [Member]	Oct. 25, 2013 Subsequent Event [Member]
Note 13 - Subsequent Events (Details) [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired	$ 31,786,000	$ 31,376,000		$ 18,900,000	$ 8,500,000
Common Stock, Dividends, Per Share, Declared (in Dollars per share)							$ 0.13
Dividends, Common Stock, Cash						3,400,000
Area of Real Estate Property (in Acres)			11.9
Proceeds from Sale of Other Property, Plant, and Equipment			4,100,000
Related Party Transaction Sale Ownership Percentage								80.00%
Equity Method Investment, Ownership Percentage								20.00%
Gain (Loss) on Disposition of Property Plant Equipment	$ (107,000)	$ 378,000	$ 2,500,000