CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($)	3 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Cash flows from operating activities:
Net income (loss)	$ 279,066	$ (384,005)
Adjustments to reconcile net loss to net cash used in operating activities:
Deferred income taxes	215,178	(113,182)
Depreciation and amortization	42,413	45,062
Provision for inventory obsolescence	5,713	5,000
Amortization of debt discount	0	30,874
Amortization of deferred financing costs	1,357	27,080
Change in fair value of common stock warrant	(67,760)	133,881
Non-cash stock-based compensation	6,466	12,063
Changes in assets and liabilities:
(Increase) decrease in accounts receivable	(231,814)	1,250,928
Increase in inventories	(497,471)	(534,136)
Increase in prepaid expenses & other	(47,718)	(316,628)
Increase (decrease) in accounts payable and other accrued expenses	325,746	(2,593)
Increase in accrued payroll, vacation pay & withholdings	82,174	28,936
Decrease in deferred revenues	(10,442)	(33,226)
Decrease in other long-term liabilities	(6,300)	(2,100)
Net cash provided by operating activities	96,608	147,954
Cash flows from investing activities:
Purchases of equipment	(5,873)	(1,145)
Net cash used in investing activities	(5,873)	(1,145)
Cash flows from financing activities:
Repayment of long-term debt	(94,670)	(156,069)
Repayment of capitalized lease obligations	(3,974)	(20,400)
Net cash used in financing activities	(98,644)	(176,469)
Net decrease in cash and cash equivalents	(7,909)	(29,660)
Cash and cash equivalents at beginning of period	185,932	232,118
Cash and cash equivalents at end of period	178,023	202,458
Supplemental cash flow information:
Taxes paid	0	20,500
Interest paid	$ 17,154	$ 53,556