Note 2 - Accounts Receivable (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Contracts in Transit [Member]
Accounts receivable gross	$ 168,460	$ 162,785
Trade Accounts Receivable [Member]
Accounts receivable gross	33,749	37,194
Vehicle Receivables [Member]
Accounts receivable gross	36,470	34,876
Manufacturer Receivables [Member]
Accounts receivable gross	59,215	56,008
Auto Loans Receivables [Member]
Accounts receivable gross	42,490	25,424
Other Receivables [Member]
Accounts receivable gross	3,033	4,554
Accounts receivable gross	343,417	320,841
Less: Allowance for doubtful accounts	(2,243)	(2,904)
Less: Long-term portion of accounts receivable, net	(32,712)	(22,558)
Total accounts receivable, net	$ 308,462	$ 295,379