Note 3 - Stock-Based Compensation (Details) (USD $)	3 Months Ended	6 Months Ended		6 Months Ended	1 Months Ended			3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2014 Employee Stock Option [Member]	Feb. 28, 2014 Restricted Stock [Member] Director [Member]	Feb. 28, 2014 Restricted Stock [Member] Executive Officers, Non-employee Directors and Other Key Employees [Member]	Jun. 30, 2014 Restricted Stock [Member] Executive Officers, Non-employee Directors and Other Key Employees [Member]	Jun. 30, 2014 Restricted Stock [Member]	Jun. 30, 2014 Restricted Stock [Member]	Mar. 31, 2014 Restricted Stock [Member] Minimum [Member]	Jun. 30, 2014 Director [Member]	Jun. 30, 2013 Director [Member]	Jun. 30, 2014 Maximum [Member] 1995 Stock Option Plans [Member]
Note 3 - Stock-Based Compensation (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures (in Shares)											0	12,000
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period													10 years
Allocated Share-based Compensation Expense	$ 5,843	$ 11,686		$ 0				$ 29,065
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options	0	0	0
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in Shares)							300,000
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period						4 years				4 years
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in Shares)					1,619	9,375
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition						4 years			4 years
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized								$ 280,960	$ 280,960