Note 9 - Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2019

Notes Tables

Schedule of Common Stock Outstanding Roll Forward [Table Text Block]

:	Number of shares outstanding
January 1, 2018		1,070,586
Repurchase and cancellation of shares of Common Stock		(64,084	)
Shares issued in connection with exercise of stock options		266
December 31, 2018		1,006,768
Shares issued in connection with Reverse Split		525
Shares issued in connection with exercise of stock options		7,806
Shares issued in connection with Employment Agreement		5,036
December 31, 2019		1,020,135

Share-based Payment Arrangement, Option, Activity [Table Text Block]

	Number of Options			Weighted Average Exercise Price
Balance, December 31, 2017		56,661		$	2.606
Granted		13,332			2.400
Exercised		(6,666	)		2.310
Balance, December 31, 2018		63,327		$	2.594
Granted		13,332			5.600
Exercised		(13,332	)		2.350
Expired		(9,999	)		2.550
Balance, December 31, 2019		53,328		$	3.391

Share-based Payment Arrangement, Option, Exercise Price Range [Table Text Block]

Exercise Price	Outstanding	Weighted average remaining contractual life of options (in years)	Exercisable	Intrinsic Value
$5.60	13,332	4.92	---	$	---
$2.40	13,332	3.92	13,332	$	20,225
$3.24	13,332	2.92	13,332	$	9,026
$2.25	6,666	1.92	6,666	$	11,113
$2.40	6,666	.92	6,666	$	10,113
TOTALS	53,328		39,996	$	50,477