Note 2 - Significant Accounting Policies (Details) - Summary of Stock Option Activity Under Stock Option Plans (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Summary of Stock Option Activity Under Stock Option Plans [Abstract]
Weighted Average Exercise Price Outstanding	$ 5.04	$ 4.53	$ 4.40	$ 4.35
Number of Shares Outstanding	84,600	121,600	115,600	103,600
Weighted Average Remaining Contractual Term Outstanding	7 years 80 days	4 years 302 days	5 years 54 days
Aggregate Intrinsic Value Outstanding	$ 104,656	$ 206,760	$ 206,332
Weighted Average Exercise Price Exercisable	$ 5.04	$ 4.53	$ 4.40
Number of Shares Exercisable	84,600	121,600	115,600
Weighted Average Remaining Contractual Term (in years) Exercisable	7 years 80 days	4 years 302 days	5 years 54 days
Aggregate Intrinsic Value Exercisable	$ 104,656	$ 206,760	$ 206,332
Weighted Average Exercise Price Granted	$ 6.87	$ 5.27	$ 4.80
Number of Shares Granted	12,000	12,000	12,000
Weighted Average Exercise Price Exercised	$ 4.23	$ 3.50
Number of Shares Exercised	(49,000)	(6,000)	0