CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited)
Sales, net	$ 11,335	$ 9,937	$ 19,899	$ 20,826
Expenses
Cost of products	7,124	5,609	12,592	12,603
Selling, general and administrative	4,553	4,364	8,526	9,107
Total expenses	11,677	9,973	21,118	21,710
Operating loss	(342)	(36)	(1,219)	(884)
Other income (expense):
Net interest (expense) income	(14)	(6)	(18)	3
Gain (loss) gain on investment in securities	2,262	(200)	2,467	(506)
Other expense	(26)	(32)	(44)	(79)
Total other income (expense)	2,222	(238)	2,405	(582)
Income (loss) before income taxes	1,880	(274)	1,186	(1,466)
Income tax expense	(184)	(28)	(184)	(28)
Net income (loss)	$ 1,696	$ (302)	$ 1,002	$ (1,494)
Net income (loss) per share-basic:	$ 0.13	$ (0.02)	$ 0.08	$ (0.12)
Net income (loss) per share-diluted:	$ 0.12	$ (0.02)	$ 0.08	$ (0.12)
Weighted average shares outstanding-basic	13,563,763	12,495,707	13,043,477	12,525,407
Weighted average shares outstanding-diluted	13,625,095	12,495,707	13,101,635	12,525,407