Condensed Consolidated Balance Sheets - USD ($)	Dec. 31, 2020	Mar. 31, 2020
Current assets:
Cash	$ 2,941,731	$ 3,126,195
Accounts receivable, net	1,881,122	1,411,644
Inventories, net	2,930,864	3,092,679
Restricted cash to support appeal bond	2,011,050	2,008,544
Prepaid expenses and other current assets	239,447	382,428
Total current assets	10,004,214	10,021,490
Equipment and leasehold improvements, net	230,308	263,750
Operating lease right-of-use assets	146,907	306,740
Deferred tax asset, net	2,648,897	2,712,780
Other long-term assets	35,109	35,109
Total assets	13,065,435	13,339,869
Current liabilities:
Line of credit	0	680,000
Operating lease liabilities – current portion	146,907	214,793
Accounts payable and accrued liabilities	681,118	1,035,023
Deferred revenues – current portion	116,399	145,168
Accrued legal damages	5,837,673	5,657,549
Finance lease obligations – current portion	0	49
Accrued payroll, vacation pay and payroll taxes	457,749	512,732
Total current liabilities	7,239,846	8,245,314
Operating lease liabilities – long-term	0	91,947
Deferred revenues – long-term	300,923	327,132
Total liabilities	7,540,769	8,664,393
Commitments and contingencies
Stockholders’ equity:
Preferred stock
Common stock, 7,000,000 shares authorized, par value $0.10 per share, 3,255,887 shares issued and outstanding, respectively	325,586	325,586
Additional paid-in capital	7,392,453	7,616,624
Accumulated deficit	(7,036,738)	(7,870,099)
Total stockholders’ equity	5,524,666	4,675,476
Total liabilities and stockholders’ equity	13,065,435	13,339,869
Series A Preferred Stock [Member]
Stockholders’ equity:
Preferred stock	3,695,998	3,515,998
Series B Preferred Stock [Member]
Stockholders’ equity:
Preferred stock	$ 1,147,367	$ 1,087,367