Note 13 - Stock Option Plans (Detail) - Stock Options Outstanding (USD $)				12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2012 Options Outstanding, Exercise Price Range 1 [Member]	Dec. 31, 2012 Options Outstanding, Exercise Price Range 2 [Member]	Dec. 31, 2012 Options Outstanding, Exercise Price Range 3 [Member]
Range of Exercise Price - Lower Range Limit				$ 0.69	$ 2.96	$ 0.69
Range of Exercise Price - Upper Range Limit				$ 2.08	$ 4.26	$ 4.26
Number Outstanding (in Shares)	345,500	342,500	194,000	321,500	24,000	345,500
Wgt. Avg. Contractual Life Remaining				5 years 219 days	4 years 328 days	5 years 6 months
Wgt. Avg. Exercise Price	$ 1.72	$ 1.78		$ 1.58	$ 3.57	$ 1.72
Aggregate Intrinsic Value (in Dollars)				$ 10,320		$ 10,320