Condensed Consolidated Statements of Cash Flows - USD ($)	3 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Net income (loss)	$ 257,776	$ (746,073)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	19,075	16,726
Provision for inventory obsolescence	10,000	10,000
Change in fair value of common stock warrant	78,500	0
Non-cash stock-based compensation	5,841	7,755
Changes in assets and liabilities:
Decrease in accounts receivable	620,127	422,165
(Increase) decrease in inventories	(175,342)	164,046
Decrease (increase) in prepaid expenses & other assets	1,286	(14,360)
Increase in restricted cash for appeal bond	(652)	(998)
Decrease in accounts payable and other accrued expenses	(572,448)	(3,771)
Increase (decrease) in accrued payroll, vacation pay & withholdings	26,957	(67,517)
Increase in deferred revenues	115,489	199,545
Increase in accrued legal damages	83,450	12,652
Net cash provided by operating activities	470,059	170
Cash flows from investing activities:
Purchases of equipment	(23,507)	0
Net cash used in investing activities	(23,507)	0
Cash flows from financing activities:
Repayment of long-term debt	0	(1,590)
Repayment of line of credit	(50,000)	(50,000)
Repayment of capitalized lease obligations	(602)	(1,660)
Net cash used in financing activities	(50,602)	(53,250)
Net increase (decrease) in cash and cash equivalents	395,950	(53,080)
Cash and cash equivalents at beginning of period	585,856	307,812
Cash and cash equivalents at end of period	981,806	254,732
Supplemental cash flow information:
Taxes paid	0	0
Interest paid	$ 20,747	$ 18,554