Note 9 - Income Taxes (Detail) - Uncertain Tax Positions Income Tax Expense (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Income tax expense related to uncertain tax positions	$ 168	$ 210	$ 595	$ 640
Interest expense related to uncertain tax positions	54	63	159	185
Total income tax expense related to uncertain tax positions	$ 222	$ 273	$ 754	$ 825