Note 3 - Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2013

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

	Weighted Average Exercise Price		# of shares			Weighted Average Remaining Contractual Term (in years)		Aggregate Intrinsic Value
Outstanding, January 1, 2012	$	4.40		115,600
Granted		5.27		12,000
Cancelled		-		-
Exercised		2.72		(2,000	)
Outstanding, September 30, 2012	$	4.51		125,600			4.93	$	213,256
Exercisable, September 30, 2012	$	4.51		125,600			4.93	$	213,256
Outstanding, January 1, 2013	$	4.53		121,600
Granted		6.87		12,000
Cancelled		-		-
Exercised		4.23		(49,000	)
Outstanding, September 30, 2013	$	5.04		84,600			7.22	$	104,656
Exercisable, September 30, 2013	$	5.04		84,600			7.22	$	104,656

Schedule of Share-based Compensation, Activity [Table Text Block]

	September 30, 2013		September 30, 2012
Weighted average grant-date fair value of stock options granted	$	0.97	$	0.83
Total fair value of stock options vested	$	11,686	$	10,000
Total intrinsic value of stock options exercised	$	113,790	$	3,077