Note 8 - Shareholders' Equity (Details) - Options Outstanding (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Note 8 - Shareholders' Equity (Details) - Options Outstanding [Line Items]
Options outstanding (in Shares)	712,763	832,763
Weighted average remaining contractual term	5 years 138 days	6 years 29 days
Weighted average exercise price	$ 1.33	$ 1.30
Options exercisable (in Shares)	564,763
Weighted average exercise price of options exercisable	$ 1.30
$0.68 - $0.84 [Member]
Note 8 - Shareholders' Equity (Details) - Options Outstanding [Line Items]
Exercise price - minimum	$ 0.68
Exercise price - maximum	$ 0.84
Options outstanding (in Shares)	125,763
Weighted average remaining contractual term	5 years 149 days
Weighted average exercise price	$ 0.77
Options exercisable (in Shares)	103,263
Weighted average exercise price of options exercisable	$ 0.79
$1.05 - $1.19 [Member]
Note 8 - Shareholders' Equity (Details) - Options Outstanding [Line Items]
Exercise price - minimum	$ 1.05
Exercise price - maximum	$ 1.19
Options outstanding (in Shares)	160,000
Weighted average remaining contractual term	1 year 138 days
Weighted average exercise price	$ 1.10
Options exercisable (in Shares)	157,500
Weighted average exercise price of options exercisable	$ 1.10
$1.51 - $1.69 [Member]
Note 8 - Shareholders' Equity (Details) - Options Outstanding [Line Items]
Exercise price - minimum	$ 1.51
Exercise price - maximum	$ 1.69
Options outstanding (in Shares)	377,000
Weighted average remaining contractual term	7 years 14 days
Weighted average exercise price	$ 1.55
Options exercisable (in Shares)	254,000
Weighted average exercise price of options exercisable	$ 1.54
$1.79 [Member]
Note 8 - Shareholders' Equity (Details) - Options Outstanding [Line Items]
Options outstanding (in Shares)	50,000
Weighted average remaining contractual term	5 years 222 days
Weighted average exercise price	$ 1.79
Options exercisable (in Shares)	50,000
Weighted average exercise price of options exercisable	$ 1.79