Note 8 - Derivative Financial Instruments (Details) - Effect of Derivative Instruments on Consolidated Statements of Operations (Floor Plan Interest Expense [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Floor Plan Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Interest Rate Swap Contract, Amount of Gain Recognized in Accumulated OCI (Effective Portion)	$ 100	$ 108
Interest Rate Swap Contract, Amount of Loss Reclassified from Accumulated OCI into Income (Effective Portion)	(125)	(134)
Interest Rate Swap Contract, Amount of Loss Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)	$ (177)	$ (171)