Note 8 - Income Taxes (Detail) - The following presents a rollforward of the unrecognized tax benefits, and the associated interest a (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Balance at January 1, 2011	$ 407,000	$ 357,000
Deferred tax position	30,000	50,000
Balance,	$ 437,000	$ 407,000