Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Cash flows used in operating activities:
Net income (loss)	$ 203,038	$ (4,322,311)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Deferred income taxes	0	(63,500)
Depreciation and amortization	60,954	70,060
Amortization of deferred financing costs	0	3,363
Change in fair value of common stock warrant	43,500	(95,000)
Provision for inventory obsolescence	78,000	90,000
Non-cash stock-based compensation	24,016	30,273
Changes in assets and liabilities:
(Increase) decrease in accounts receivable	(1,101,050)	461,333
Decrease (increase) in inventories	1,264,531	(151,755)
(Increase) decrease in prepaid expenses and other assets	(127,484)	35,869
(Decrease) increase in accounts payable	(1,249,509)	879,493
Increase in accrued legal damages	252,095	2,259,990
Increase in restricted cash for appeal bond	(4,005)	(2,000,866)
(Decrease) in deferred revenues	(35,936)	(78,966)
(Decrease) in federal and state taxes payable	0	(4,105)
Decrease in accrued payroll, vacation pay & withholdings	(53,567)	(79,550)
Increase (decrease) in accrued expenses – related party and other	162,919	(372,065)
Net cash used in operating activities	(482,498)	(3,337,737)
Cash flows from investing activities:
Acquisition of equipment	(121,790)	(89,396)
Net cash used in investing activities	(121,790)	(89,396)
Cash flows from financing activities:
Proceeds from line of credit	0	800,000
Repayment of line of credit	(200,000)	0
Proceeds from short-swing profits from an investor, net of expenses	123,075	0
Proceeds from issuance of convertible preferred stock	1,000,000	3,000,000
Expenses associated with convertible preferred stock	(31,744)	(54,669)
Repayment of long-term debt	(2,124)	(291,991)
Repayment of capitalized lease obligations	(6,875)	(6,268)
Net cash provided by financing activities	882,332	3,447,072
Net increase in cash	278,044	19,939
Cash, beginning of year	307,812	287,873
Cash, end of year	585,856	307,812
Supplemental cash flow information:
Taxes paid	0	0
Interest paid	$ 82,483	$ 68,724