Condensed Consolidated Statements of Operations - USD ($)	3 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Income Statement [Abstract]
Net sales	$ 2,939,437	$ 3,306,462
Cost of sales	1,434,826	1,724,858
Gross margin	1,504,611	1,581,604
Selling, general and administrative	661,251	612,471
Litigation costs	2,696	10,507
Engineering, research and development	631,953	525,103
Total operating expenses	1,295,900	1,148,081
Income from operations	208,711	433,523
Change in fair value of common stock warrants	0	(78,500)
Other income	13,854	0
Interest income	2,846	1,000
Interest expense – judgment	(75,144)	(80,510)
Interest expense	(9,780)	(17,737)
Total other expense	(68,224)	(175,747)
Income before income taxes	140,487	257,776
Income tax expense	29,507	0
Net income	110,980	257,776
Preferred stock dividends	(80,000)	(80,000)
Net income attributable to common shareholders	$ 30,980	$ 177,776
Basic income per common share (in Dollars per share)	$ 0.01	$ 0.05
Diluted income per common share (in Dollars per share)	$ 0.01	$ 0.04
Weighted average shares outstanding:
Basic (in Shares)	3,255,887	3,255,887
Diluted (in Shares)	3,255,887	4,915,665