Condensed Consolidated Balance Sheets (USD $) In Thousands	Sep. 30, 2011	Mar. 31, 2011
Current assets:
Cash and cash equivalents	$ 2,866	$ 9,180
Accounts receivable, net of allowance for doubtful accounts of $73 and $56, respectively	1,672	1,592
Inventories, net	6,307	6,096
Prepaid expenses and other current assets	376	332
Total current assets	11,221	17,200
Machinery and equipment	3,422	3,182
Demonstration equipment	1,053	1,413
Furniture and fixtures	224	224
Leasehold improvements	372	372
Total property and equipment, at cost	5,071	5,191
Less—accumulated depreciation and amortization	2,799	2,970
Total property and equipment, net	2,272	2,221
Other assets, net of accumulated amortization of $93 and $90, respectively	70	73
Deferred debt cost, net of accumulated amortization of $256 and $172, respectively	1,804	272
Total assets	15,367	19,766
Current liabilities:
Capital lease obligations	97	65
Accounts payable	748	921
Accrued expenses	537	782
Accrued compensation	761	706
Advances from customers	2,847	5,693
Total current liabilities	4,990	8,167
Line of credit—related party	6,000	5,000
Capital lease obligations, net of current portion	143	75
Total liabilities	11,133	13,242
Common stock, $0.01 par value—
Issued—44,663 shares and 44,025 shares, respectively	447	440
Additional paid-in capital	97,632	94,339
Treasury stock at cost, 3 shares and none, respectively	(7)
Accumulated deficit	(93,838)	(88,255)
Total stockholders’ equity	4,234	6,524
Total liabilities and stockholders’ equity	$ 15,367	$ 19,766