Condensed Consolidated Balance Sheets (USD $)	Sep. 30, 2011	Mar. 31, 2011
Current assets:
Cash and cash equivalents	$ 3,848,000	$ 4,744,000
Restricted cash		500,000
Accounts receivable, net	5,503,000	4,587,000
Inventories	4,667,000	4,775,000
Prepaid expenses and other current assets	387,000	349,000
Total current assets	14,405,000	14,955,000
Equipment and leasehold improvements, net	3,607,000	3,730,000
Goodwill	4,579,000	4,579,000
Intangibles and patents, net	5,130,000	5,713,000
Other assets	266,000	275,000
Total Assets	27,987,000	29,252,000
Current liabilities:
Accounts payable	1,784,000	2,098,000
Accrued compensation	878,000	953,000
Accrued interest	21,000	28,000
Accrued warrant liability		389,000
Other accrued expenses	1,027,000	905,000
Current portion of long-term debt - related parties	725,000	675,000
Current portion of long-term debt - bank term loan	229,000	687,000
Current portion of long-term debt - bank line of credit		494,000
Current portion of long-term debt - MEDC/MSF	521,000	511,000
Total current liabilities	5,185,000	6,740,000
Long-term debt, less current portion - related parties		500,000
Long-term debt, less current portion - bank term loan	770,000
Long-term debt, less current portion - bank line of credit	494,000
Long-term debt, less current portion - MEDC/MSF	1,197,000	1,460,000
Long-term portion of warrant liability	98,000	343,000
Total liabilities	7,744,000	9,043,000
Commitments and contingencies
Shareholders' equity:
Class A Common Stock, $.001 par value, 100,000,000 authorized; September 30, 2011 - 30,971,560 shares issued and outstanding, March 31, 2011 - 30,679,046 shares issued and outstanding	31,000	31,000
Additional paid-in capital	58,161,000	57,891,000
Accumulated deficit	(37,949,000)	(37,713,000)
Total shareholders' equity	20,242,000	20,209,000
Total Liabilities and Shareholders' Equity	$ 27,987,000	$ 29,252,000