Note 8 - Income Taxes (Details) - Reconciliation of Income Tax Expense (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Reconciliation of Income Tax Expense [Abstract]
Income tax expense	$ 859	$ 1,651
Effective income tax rate	40.20%	65.50%