Note 9 - Derivative Financial Instruments (Detail) - 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	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Gain (loss) recognized in other comprehensive income, net of tax	$ (36)	$ 3	$ (282)