Note 13 - Income Taxes (Detail) - Components of Income Taxes Related to Other Comprehensive Income (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income tax expense (benefit) related to components of other comprehensive income:
Change in fair value of cash flow swaps	$ 133	$ (728)	$ (142)
Change in fair value of available-for-sale securities	(9)	(360)
Total	124	(1,088)	(142)
Paid in capital – stock based compensation	$ (1,668)	$ (1,993)	$ (885)