Note 9 - Income Taxes (Detail) - Uncertain Tax Positions Income Tax Expense (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Income tax expense related to uncertain tax positions	$ 168	$ 210	$ 427	$ 430
Interest expense related to uncertain tax positions	53	62	105	122
Total income tax expense related to uncertain tax positions	$ 221	$ 272	$ 532	$ 552