Note 10 - Income Taxes (Details) - Income Tax Expense (Benefit) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013
Current
Domestic -- Federal									$ 1,073	$ 515
Domestic -- state									78	74
Foreign									1	35
									1,152	624
Deferred
Domestic -- Federal									401	218
Domestic -- state									256	212
Foreign									(339)	(123)
									318	307
Income tax expense	$ 217	$ 431	$ 697	$ 125	$ 345	$ 24	$ 484	$ 78	$ 1,470	$ 931