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Note O - Stock Options (Tables)

12 Months Ended

Dec. 31, 2017

Notes Tables

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

		Number of Options																				Weighted average				Weighted average remaining				Aggregate
		1999 Plan				2004 Plan				2015 Plan				Non Plan				Total				exercise price				life (in years)				intrinsic value

Outstanding, as of December 31, 2015			20,834				85,008				—				259,088				364,930			$	3.87

Granted			—				—				27,087				—				27,087				2.74
Exercised			—				—				—				—				—
Forfeited			—				—				(2,084	)			(8,335	)			(10,419	)			2.16
Expired			(20,834	)			(15,628	)			—				(3,473	)			(39,935	)			2.50
Outstanding, as of December 31, 2016			—				69,380				25,003				247,280				341,663			$	3.99				4.23			$	53,936

Granted			—				—				64,167				1,170,000				1,234,167				2.69
Exercised			—				—				—				(4,167	)			(4,167	)			2.16
Forfeited			—				—				(7,084	)			(65,140	)			(72,224	)			2.62
Expired			—				(17,084	)			—				(4,862	)			(21,946	)			8.86
Outs tanding, as of December 31, 2017			—				52,296				82,086				1,343,111				1,477,493			$	2.91				5.64			$	0
Vested or expec ted to vest at December 31, 2017																			1,083,691			$	2.98				5.43			$	0
Exercisable at December 31, 2017																			261,294			$	3.96				3.09			$	0

Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding and Exercisable [Table Text Block]

						Options Outstanding												Options Exercisable
Range of exercise prices						Number of shares				Weighted average exercise price				Weighted average remaining life (in years)				Number exercisable				Weighted average exercise price
$	1.90	-	2.50				87,064			$	2.16				4.65				56,422			$	2.16
	2.51	-	3.50				1,207,296				2.70				6.15				21,740				3.23
	3.51	-	5.04				183,132				4.60				2.77				183,132				4.60
$	1.90	-	5.04				1,477,493												261,294