Note 2 - Accounts Receivable (Detail) - Accounts Receivable (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Receivables	$ 133,485	$ 99,668
Less: Allowance	(336)	(261)
Total accounts receivables, net	133,149	99,407
Contracts in Transit [Member]
Receivables	65,597	47,867
Trade Accounts Receivable [Member]
Receivables	20,932	16,418
Vehicle Receivables [Member]
Receivables	21,298	15,930
Manufacturer Receivables [Member]
Receivables	$ 25,658	$ 19,453