EQUITY INCENTIVE PLAN, Part 1 (Details) - USD ($)				3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 25, 2021	Jan. 03, 2020	Sep. 22, 2011	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020	Jun. 18, 2019	Jun. 19, 2014	Jun. 03, 2008
Employee Service Share-based Compensation, Aggregate Disclosures [Abstract]
Allocated share-based compensation expense				$ 585,844	$ 384,225	$ 1,165,632	$ 347,141
Stock options, additional disclosure [Abstract]
Outstanding, aggregate intrinsic value, end of period				388,182		388,182
Exercisable, aggregate intrinsic value, end of period				$ 173,621		$ 173,621
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				6 years		5 years
Expected volatility				76.42%		78.23%
Expected dividend yield				1.01%		0.81%
Risk-free interest rate				2.03%		2.93%
Stock options, number of shares [Roll forward]
Outstanding, beginning of period (in shares)						974,778
Granted (in shares)						925,949
Exercised (in shares)						0
Forfeited (in shares)						8,682
Expired (in shares)						25,000
Outstanding, end of period (in shares)				1,867,045		1,867,045		974,778
Exercisable, end of period (in shares)				526,210		526,210
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)						4.73
Exercised (in dollars per share)						0
Forfeited (in dollars per share)						5.89
Expired (in dollars per share)						5.64
Outstanding, end of period (in dollars per share)				$ 4.40		4.40		$ 4.12
Exercisable, end of period (in dollars per share)				$ 4.79		$ 4.79
Stock options, additional disclosure [Abstract]
Outstanding, weighted average remaining contract term						7 years 29 days		2 years 10 months 13 days
Exercisable, weighted average remaining contract term						4 years 3 months 10 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				$ 388,182		388,182		$ 1,520,910
Exercisable, aggregate intrinsic value, end of period				173,621		173,621
Net unrecognized compensation cost				$ 2,907,843		$ 2,907,843
Weighted average period for recognition of net unrecognized compensation cost						2 years 10 months 20 days
Total fair value of stock options vested during period						$ 335,579	112,311
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)						714,000
Options still available to be issued (in shares)				0		0
Stock options, number of shares [Roll forward]
Outstanding, end of period (in shares)				36,000		36,000
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)						519,782
Options still available to be issued (in shares)				0		0
Stock options, number of shares [Roll forward]
Outstanding, end of period (in shares)				259,157		259,157
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)	4,800,000								2,400,000
Increase in number of shares authorized (in shares)	2,400,000
Number of stock options expired, forfeited or exercised under the plan (in shares)						440,310
Options still available to be issued (in shares)				2,658,522		2,658,522
Stock options, number of shares [Roll forward]
Outstanding, end of period (in shares)				2,219,224		2,219,224
2014 & 2019 Stock Incentive Plan [Member] | Stock Options [Member]
Stock options, number of shares [Roll forward]
Outstanding, end of period (in shares)				21,061		21,061
Cost of Product Sales [Member]
Employee Service Share-based Compensation, Aggregate Disclosures [Abstract]
Allocated share-based compensation expense				$ 43,368	0	$ 72,136	6,300
Research and Development Expenses [Member]
Employee Service Share-based Compensation, Aggregate Disclosures [Abstract]
Allocated share-based compensation expense				139,469	90,924	223,704	154,737
Selling, General and Administrative Expenses [Member]
Employee Service Share-based Compensation, Aggregate Disclosures [Abstract]
Allocated share-based compensation expense				403,007	293,301	869,792	610,089
Severance and Related Costs [Member]
Employee Service Share-based Compensation, Aggregate Disclosures [Abstract]
Allocated share-based compensation expense				$ 0	$ 0	$ 0	$ (423,985)