Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Accumulated amortization, equipment for Lease	$ 77	$ 50
Accumulated amortization, patent and trademarks	337	320
Accumulated amortization, capitalized software costs	$ 32	$ 20
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, authorized	675,000,000	675,000,000
Common stock, issued	7,435,005	5,603,888
Common stock, outstanding	7,360,478	5,596,877
Treasury stock, shares	74,527	7,011
Series A Convertible Preferred Stock [Member]
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, authorized	37,564,767	37,564,767
Preferred stock, issued	0	0
Preferred stock, outstanding	0	0
Series B Convertible Preferred Stock [Member]
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, authorized	85	85
Preferred stock, issued	0.85	0.85
Preferred stock, outstanding	0.85	0.85