Note 13 - Stock Option Plans (Tables)

12 Months Ended

Dec. 31, 2014

Note 13 - Stock Option Plans (Tables) [Line Items]

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

	2014			2013
Options outstanding at January 1		270,500			345,500
Options cancelled		(12,000	)		(92,000	)
Options granted		16,000			17,000
Options outstanding at December 31		274,500			270,500
Options available for grant at December 31		138,000			154,000
Options exercisable at December 31		250,000			194,167
Exercise price ranges per share:
Granted	$	1.35		$	1.33
Outstanding	$	0.69 - $3.84		$	0.69 - $3.84
Weighted average exercise price per share:
Granted	$	1.35		$	1.33
Outstanding at December 31	$	1.72		$	1.75
Exercisable at December 31	$	1.76		$	1.83

Outstanding [Member]

Note 13 - Stock Option Plans (Tables) [Line Items]

Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]

Options Outstanding:
Range of Exercise Price		Number Outstanding		Wgt. Avg. Contractual Life Remaining (yrs)		Wgt. Avg. Exercise Price		Aggregate Intrinsic Value
$	0.69 - $2.08		250,500		6.4	$	1.55	$	31,525
$	3.30 - $3.84		24,000		2.9	$	3.57		--
$	0.69 -$3.84		274,500		6.1	$	1.72	$	31,525

Exercisable [Member]

Note 13 - Stock Option Plans (Tables) [Line Items]

Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]

Options Exercisable:
Range of Exercise Price		Number Exercisable		Wgt. Avg. Contractual Life Remaining (yrs)		Wgt. Avg. Exercise Price		Aggregate Intrinsic Value
$	0.69 - $2.08		226,000		6.0	$	1.57	$	24,985
$	3.30 -$3.84		24,000		2.9	$	3.57		--
$	0.69 -$3.84		250,000		5.7	$	1.76	$	24,985