CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($)	3 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Cash flows from operating activities:
Net income	$ 410,309	$ 279,066
Adjustments to reconcile net loss to net cash used in operating activities:
Deferred income taxes	167,744	215,178
Depreciation and amortization	35,010	42,413
Provision for inventory obsolescence	15,000	5,713
Amortization of debt discount	0	0
Amortization of deferred financing costs	1,356	1,357
Change in fair value of common stock warrant	(217,203)	(67,760)
Non-cash stock-based compensation	8,179	6,466
Changes in assets and liabilities:
Increase in accounts receivable	(811,605)	(231,814)
Decrease (increase) in inventories	615,748	(497,471)
Increase in prepaid expenses & other assets	(635,780)	(47,718)
(Decrease) increase in accounts payable and other accrued expenses	(335,444)	325,746
Decrease in federal and state taxes	(53,623)	0
(Decrease) increase in accrued payroll, vacation pay & withholdings	(75,898)	82,174
Increase (decrease) in deferred revenues	481,277	(10,442)
Decrease in other long-term liabilities	(6,300)	(6,300)
Net cash (used in) provided by operating activities	(401,230)	96,608
Cash flows from investing activities:
Purchases of equipment	(25,307)	(5,873)
Net cash used in investing activities	(25,307)	(5,873)
Cash flows from financing activities:
Repayment of long-term debt	(102,128)	(94,670)
Repayment of subordinated notes - related parties	(25,000)	0
Repayment of capitalized lease obligations	(6,398)	(3,974)
Net cash used in financing activities	(133,526)	(98,644)
Net decrease in cash and cash equivalents	(560,063)	(7,909)
Cash and cash equivalents at beginning of period	972,633	185,932
Cash and cash equivalents at end of period	412,570	178,023
Supplemental cash flow information:
Taxes paid	50,000	0
Interest paid	$ 21,504	$ 17,154