Stockholders' Equity (Details Narrative) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Unrecognized compensation expense	$ 1,600	$ 3,000	$ 2,600
Options granted (in shares)	635,000	1,697,883	2,056,700
Options, weighted average fair value at grant date	$ 1.27	$ 1.77	$ 1.75
Equity Incentive Plan 2018
Shares reserved for future issuance	25,000,000