Note 9 - Stock Option Plan (Details) (Stock Option Plan 1999 [Member], USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Stock Option Plan 1999 [Member]
Note 9 - Stock Option Plan (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period (in Shares)	2,500
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value	$ 15,000	$ 0	$ 141,000
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense	$ 0	$ 0	$ 0