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
Total revenue	$ 3,304	$ 2,440	$ 5,636	$ 4,023
Operating costs and expenses:
Cost of product revenue	502	631	954	1,159
Cost of cryptocurrency revenue	545	0	873	0
Research and product development expenses	406	362	792	764
Selling, general and administrative expenses	3,030	847	4,867	1,642
Operating (loss) income	(1,179)	600	(1,850)	458
Other income, net	8	2	13	4
(Loss) income before income taxes	(1,171)	602	(1,837)	462
Income tax (expense) benefit	(3)	0	(3)	3
Net (loss) income	$ (1,174)	$ 602	$ (1,840)	$ 465
Net loss per share (Basic)	$ (0.10)	$ 0.06	$ (0.17)	$ 0.05
Net loss per share (Diluted)	$ (0.10)	$ 0.06	$ (0.17)	$ 0.05
Weighted average shares outstanding (Basic)	11,709,851	9,570,677	10,758,641	9,570,677
Weighted average shares outstanding (Diluted)	11,709,851	9,651,615	10,758,641	9,655,514
Product Revenue [Member]
Total revenue	$ 1,647	$ 2,390	$ 2,984	$ 3,973
Cryptocurrency Revenue [Member]
Total revenue	$ 1,657	$ 50	$ 2,652	$ 50