2. Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2020

Accounting Policies [Abstract]

Schedule of Share-based payment award, stock options, valuation assumptions

The fair values of option awards were estimated at the date of grant using a Black-Scholes option-pricing model with the following assumptions for fiscal years ended December 31, 2020 and 2019, respectively:

	2020		2019
Weighted average grant date fair value	$	3.50	$	3.69
Weighted average assumptions used:
Expected dividend yield		0.00%		0.00%
Risk-free interest rate		0.41%		2.00%
Expected volatility		75.70%		124.58%
Expected life (in years)		5.93		5.00