Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($)	Sep. 30, 2015	Dec. 31, 2014
Accounts receivable-trade, net allowance for doubtful accounts	$ 1,492	$ 395
OTHER INTANGIBLES, accumulated amortization	$ 695,747	$ 665,225
Preferred stock par value (in dollars per share)	$ 0.10	$ 0.10
Preferred stock, shares authorized (in shares)	20,000,000	20,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.0024	$ 0.0024
Common stock, shares authorized (in shares)	25,000,000	25,000,000
Common stock, shares issued (in shares)	11,275,641	11,239,157
Common stock, shares outstanding (in shares)	9,753,293	10,245,534