Quarterly report pursuant to Section 13 or 15(d)

Cover
- Document and Entity Information
Financial Statements
Notes to Financial Statements
Accounting Policies
- Summary of Significant Accounting Policies (Policies)
Notes Tables
Notes Details

Capital Stock, Stock Plans, Warrants, and Stock-Based Compensation (Details Narrative)

v3.21.1

Capital Stock, Stock Plans, Warrants, and Stock-Based Compensation (Details Narrative) - USD ($) $ / shares in Units, $ in Thousands			1 Months Ended	3 Months Ended
	Apr. 02, 2019	Jul. 27, 2017	May 31, 2018	Mar. 31, 2021
Unrecognized compensation cost related to unvested options consultant				$ 229
Weighted average term for unrecognized and unvested option to be recognized				2 years
Ferguson Stock Option [Member]
Options to purchase shares of common stock		30,000
Options extended date description		The Company's Common Stock was previously extended to December 31, 2021 and December 31, 2022, respectively.
Ferguson Stock Option [Member]
Options to purchase shares of common stock		60,000
Robert Ferguson [Member]
Number of options exercised			10,000
Unrecognized compensation cost related to unvested options consultant				$ 262
Remaining stock option				90,000
Loans payable	$ 2,500
Warrant to purchase	60,000
Warrants exercise price	$ 3.51
Warrant exercisable, description	The Warrant is exercisable six months from April 1, 2019 and expires on April 1, 2024 and remains outstanding at December 31, 2020
2017 Stock Option Plan [Member] \| Consultant [Member]
Number of stock option shares granted		100,000
Stock options, exercise price		$ 3.65
2003 Outside Directors Stock Plan [Member]
Stock issued during period for services, shares				11,837
Allocated share-based compensation expense				$ 107

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