Note 10 - Acquisitions (Details) - Summary of Acquisition (USD $) In Thousands, unless otherwise specified	9 Months Ended		12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Summary of Acquisition [Abstract]
Cash paid, net of cash acquired	$ 31,786	$ 31,376
Inventories	15,198
Franchise value	4,036
Property, plant and equipment	4,697
Other assets	122
Other liabilities	(533)
	23,520
Goodwill	8,266		13,710
	$ 31,786