CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Unaudited Consolidated Condensed) - USD ($) $ in Thousands	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]	Total
Balance at beginning at Dec. 31, 2018		$ 339	$ 98,795	$ (97,750)	$ 1,384
Balance at beginning (in shares) at Dec. 31, 2018		33,911,792
Increase (Decrease) in Shareholders' Equity [Roll Forward]
Stock-based compensation			57		57
Net loss				(513)	(513)
Balance at ending at Mar. 31, 2019		$ 339	98,852	(98,263)	928
Balance at ending (in shares) at Mar. 31, 2019		33,911,792
Balance at beginning at Dec. 31, 2018		$ 339	98,795	(97,750)	1,384
Balance at beginning (in shares) at Dec. 31, 2018		33,911,792
Increase (Decrease) in Shareholders' Equity [Roll Forward]
Net loss					(1,160)
Balance at ending at Jun. 30, 2019		$ 381	100,560	(98,910)	2,031
Balance at ending (in shares) at Jun. 30, 2019		38,136,792
Balance at beginning at Mar. 31, 2019		$ 339	98,852	(98,263)	928
Balance at beginning (in shares) at Mar. 31, 2019		33,911,792
Increase (Decrease) in Shareholders' Equity [Roll Forward]
Stock option exercises			16		16
Stock option exercises (in shares)		36,000
Sale of common stock		$ 42	1,634		1,676
Sale of common stock (in shares)		4,189,000
Stock-based compensation			58		58
Net loss				(647)	(647)
Balance at ending at Jun. 30, 2019		$ 381	100,560	(98,910)	2,031
Balance at ending (in shares) at Jun. 30, 2019		38,136,792
Balance at beginning at Dec. 31, 2019		$ 381	101,886	(101,756)	1,511
Balance at beginning (in shares) at Dec. 31, 2019		38,136,792
Increase (Decrease) in Shareholders' Equity [Roll Forward]
Stock-based compensation			52		52
Net loss				(167)	(167)
Balance at ending at Mar. 31, 2020		$ 381	101,938	(100,923)	1,396
Balance at ending (in shares) at Mar. 31, 2020		38,136,792
Balance at beginning at Dec. 31, 2019		$ 381	101,886	(101,756)	1,511
Balance at beginning (in shares) at Dec. 31, 2019		38,136,792
Increase (Decrease) in Shareholders' Equity [Roll Forward]
Net loss					365
Balance at ending at Jun. 30, 2020		$ 381	101,985	(100,391)	1,975
Balance at ending (in shares) at Jun. 30, 2020		38,136,792
Balance at beginning at Mar. 31, 2020		$ 381	101,938	(100,923)	1,396
Balance at beginning (in shares) at Mar. 31, 2020		38,136,792
Increase (Decrease) in Shareholders' Equity [Roll Forward]
Stock-based compensation			47		47
Net loss				532	532
Balance at ending at Jun. 30, 2020		$ 381	$ 101,985	$ (100,391)	$ 1,975
Balance at ending (in shares) at Jun. 30, 2020		38,136,792