Note 5 - Income Taxes (Details) - Change in Unrecognized Tax Benefits (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Change in Unrecognized Tax Benefits [Abstract]
Balance of unrecognized tax benefits	$ 224,000	$ 266,000
Reductions due to lapse of applicable statue of limitations	(91,000)	(117,000)
Additions based on tax positions of prior years	27,000	84,000
Additions based on tax positions related to the current year	28,000	(9,000)
Balance of unrecognized tax benefits	$ 188,000	$ 224,000