EQUITY INCENTIVE PLAN, Part 1 (Details) - USD ($)			3 Months Ended		12 Months Ended
	Jan. 03, 2020	Sep. 22, 2011	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020	Jun. 19, 2014	Jun. 03, 2008
Employee Service Share-based Compensation, Aggregate Disclosures [Abstract]
Allocated share-based compensation expense			$ 579,789	$ (37,083)
Stock options, additional disclosure [Abstract]
Outstanding, aggregate intrinsic value, end of period			731,819
Exercisable, aggregate intrinsic value, end of period			$ 202,248
Total fair value of stock options vested during period	$ 943,126
Stock Options [Member]
Assumptions made in calculating fair values of options [Abstract]
Expected term			5 years
Expected volatility			78.29%
Expected dividend yield			1.00%
Risk-free interest rate			2.95%
Stock options, number of shares [Roll forward]
Outstanding, beginning of period (in shares)			974,778
Granted (in shares)			899,550
Exercised (in shares)			0
Forfeited (in shares)			1,042
Expired (in shares)			25,000
Outstanding, end of period (in shares)			1,848,286		974,778
Exercisable, end of period (in shares)			408,079
Stock options, weighted average exercise price per share [Roll Forward]
Outstanding, beginning of period (in dollars per share)			$ 4.12
Granted (in dollars per share)			4.72
Exercised (in dollars per share)			0
Forfeited (in dollars per share)			5.39
Expired (in dollars per share)			5.64
Outstanding, end of period (in dollars per share)			4.40		$ 4.12
Exercisable, end of period (in dollars per share)			$ 5.36
Stock options, additional disclosure [Abstract]
Outstanding, weighted average remaining contract term			5 years 11 months 23 days		2 years 10 months 13 days
Exercisable, weighted average remaining contract term			4 years 2 months 15 days
Outstanding, aggregate intrinsic value, beginning of period			$ 1,520,910
Granted, aggregate intrinsic value			0
Exercised, aggregate intrinsic value			0
Forfeited, aggregate intrinsic value			0
Outstanding, aggregate intrinsic value, end of period			731,819		$ 1,520,910
Exercisable, aggregate intrinsic value, end of period			202,248
Net unrecognized compensation cost			$ 3,176,611
Weighted average period for recognition of net unrecognized compensation cost			3 years 5 months 8 days
Total fair value of stock options vested during period			$ 188,179	182,932
2008 Stock Incentive Plan [Member] | Stock Options [Member]
Share-based Arrangements with Employees and Nonemployees [Abstract]
Number of shares authorized under the plan (in shares)		750,000					625,000
Increase in number of shares authorized (in shares)		125,000
Number of stock options expired, forfeited or exercised under the plan (in shares)			36,000
Options still available to be issued (in shares)			714,000
Number of shares forfeited under the plan (in shares)			0
2014 Stock Incentive Plan [Member] | Stock Options [Member]
Share-based Arrangements with Employees and Nonemployees [Abstract]
Number of shares authorized under the plan (in shares)						800,000
Number of stock options expired, forfeited or exercised under the plan (in shares)			259,157
Options still available to be issued (in shares)			519,782
Number of shares forfeited under the plan (in shares)			0
2019 Omnibus Incentive Plan [Member] | Stock Options [Member]
Share-based Arrangements with Employees and Nonemployees [Abstract]
Number of shares authorized under the plan (in shares)			2,400,000
Number of stock options expired, forfeited or exercised under the plan (in shares)			2,400,924
Options still available to be issued (in shares)			429,724
Number of shares forfeited under the plan (in shares)			129,865
Cost of Product Sales [Member]
Employee Service Share-based Compensation, Aggregate Disclosures [Abstract]
Allocated share-based compensation expense			$ 28,768	6,300
Research and Development Expenses [Member]
Employee Service Share-based Compensation, Aggregate Disclosures [Abstract]
Allocated share-based compensation expense			90,920	63,813
Selling, General and Administrative Expenses [Member]
Employee Service Share-based Compensation, Aggregate Disclosures [Abstract]
Allocated share-based compensation expense			460,101	316,788
Severance and Related Costs [Member]
Employee Service Share-based Compensation, Aggregate Disclosures [Abstract]
Allocated share-based compensation expense			$ 0	$ (423,984)