Equity (Tables)

12 Months Ended

Dec. 31, 2021

Equity

Common Stock Purchase Warrant Transactions

		Number of Warrants				Exercise Prices
Balance December 31, 2019			921,438			$2.52-3.08
Issued			400,002			$2.52-5.60
Expired			(772,628	)		$2.52-3.08
Exercised			(122,024	)		$	2.80
Balance December 31, 2020			426,788			$2.52-5.60
Issued			289,294			$5.60-7.00
Exercised			(46,615	)		$	2.52
Balance December 31, 2020			669,467			$2.52-7.00

Warrant Expirations

	Shares			Exercise Price				Expiration Date
	33,070			$	2.52			April 21, 2022
	347,103			$	5.60			August 28, 2022
	235,722			$	5.60			October 14, 2023
	53,572			$	7.00			November 12, 2023
	669,467

Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value

		February 11, 2021				March 15, 2021				October 20, 2021
Fair value		$	604,572			$	9,860			$	473,143
Options issued			283,936				3,572				182,143
Exercise price		$	5.60			$	5.60			$	5.60
Expected term (in years)			3.0				3.0				3.0
Risk-free rate			0.19	%			0.33	%			0.70	%
Volatility			97.9	%			99.3	%			96.6	%

Share-based Compensation, Stock Options, Activity

		Number of Options				Exercise Prices
Balance December 31, 2019			375,893			$	1.40-2.52
Exercised			(82,143	)		$	1.40-2.52
Expired			(143,750	)		$	1.40-2.52
Balance December 31, 2020			150,000			$	1.40-1.96
Granted			469,674			$	5.60
Exercised			(101,786	)		$	1.40-1.96
Forfeited			(10,713	)		$	1.96-5.60
Balance December 31, 2021			507,175			$	1.96-5.60

Exercisable at December 31, 2021			507,175			$	1.96-5.60