Note 7 - Derivative Financial Instruments (Details) - The fair value effect on the financial statements from the interest rate swap designated as a cash flow hedge is as follows: (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
The fair value effect on the financial statements from the interest rate swap designated as a cash flow hedge is as follows: [Abstract]
Gain (loss) recognized in other comprehensive income, net of tax	$ 11	$ 7	$ 24	$ (37)