BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Allowance for doubtful accounts	$ 79	$ 79
Property plant and equipment, accumulated depreciation	216	209
Intangible assets, accumulated amortization	$ 4,593	$ 4,328
Preferred Stock, Par or Stated Value Per Share	$ 0.00001	$ 0.00001
Preferred Stock, Shares Authorized	10,000,000	10,000,000
Common Stock, Par or Stated Value Per Share	$ 0.00001	$ 0.00001
Common Stock, Shares Authorized	50,000,000	50,000,000
Common Stock, Shares, Issued	10,823,000	10,130,000
Common Stock, Shares, Outstanding	10,823,000	10,130,000
Series A Preferred Stock
Preferred Stock, Par or Stated Value Per Share	$ 0.00001	$ 0.00001
Preferred Stock, Shares Authorized	200,000	200,000
Preferred Stock, Shares Issued	90,000	90,000
Preferred Stock, Shares Outstanding	90,000	90,000