Consolidated Statements of Cash Flows (USD $)	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Cash flows from operating activities:
Net loss	$ (7,714,000)	$ (10,557,000)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	695,000	795,000
Stock-based compensation expense	694,000	1,469,000
Debt cost expense	43,000	272,000
Provision for bad debt expenses	21,000	5,000
Loss on disposal of fixed assets	2,000	58,000
Loss on extinguishment of debt		1,244,000
Changes in assets and liabilities:
Accounts receivable	(215,000)	(1,497,000)
Inventories	692,000	(1,372,000)
Prepaid expenses and other current assets	(179,000)	(79,000)
Other assets	10,000
Accounts payable	(83,000)	713,000
Accrued expenses	190,000	(216,000)
Accrued compensation	(182,000)	(1,000)
Deferred revenue	111,000	(86,000)
Advances from customers		(394,000)
Net cash used in operating activities	(5,915,000)	(9,646,000)
Cash flows from investing activities:
Purchases of property and equipment	(53,000)	(95,000)
Proceeds from disposal of fixed assets	3,000	5,000
Net cash used in investing activities	(50,000)	(90,000)
Cash flows from financing activities:
Proceeds from issuance of convertible debt—related party	6,500,000	2,000,000
Proceeds from promissory note—related party		5,000,000
Net proceeds from sale of common stock	0	878,000
Proceeds from exercise of stock options		99,000
Common stock repurchased	(28,000)	(36,000)
Payments of capital leases	(58,000)	(91,000)
Net cash provided by financing activities	6,414,000	7,850,000
Net increase (decrease) in cash and cash equivalents	449,000	(1,886,000)
Cash and cash equivalents at beginning of period	788,000	2,674,000
Cash and cash equivalents at end of period	1,237,000	788,000
Cash paid during the period for:
Income taxes	11,000	17,000
Interest	8,000	592,000
Non-cash financing activities:
Beneficial conversion feature	1,129,000
Net transfers of inventory to fixed assets for use as demonstration equipment	272,000	184,000
Capital lease write-off	17,000
Debt consolidation		$ 15,000,000