Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Jun. 30, 2018	Mar. 31, 2018
Current assets:
Cash and cash-equivalents	$ 748	$ 1,485	[1]
Trade accounts receivable, net of allowance of $8 and $8, respectively	458	364	[1]
Inventories, net	3,438	5,487	[1]
Prepaid expenses and other current assets	792	87	[1]
Total current assets	5,436	7,423	[1]
Property and equipment, net	760	833	[1]
Other long term assets	175	175	[1]
Total assets	6,371	8,431	[1]
Liabilities and shareholders' equity
Line of credit	552	552	[1]
Accounts payable	756	996	[1]
Loan payable, net of discounts and issuance costs	1,523	1,447	[1]
Accrued payroll and benefits	413	343	[1]
Deferred revenue	257	3,374	[1]
Deferred rent, net of long term portion	62	58	[1]
Capital lease obligations	40	40	[1]
Deferred liability related to asset sale	51	52	[1]
Other current liabilities	959	947	[1]
Total current liabilities	4,613	7,809	[1]
Long term deferred rent	411	429	[1]
Long term obligations - capital lease	50	62	[1]
Total liabilities	5,074	8,300	[1]
Commitments and contingencies
Shareholders' equity:
Common stock no par value; Authorized - 40,000,000 shares; 10,418,953 shares at June 30, 2018 and 10,312,653 shares at March 31, 2018 issued and outstanding	25,272	25,200	[1]
Accumulated deficit	(27,793)	(28,682)	[1]
Total shareholders' equity	1,297	131	[1]
Total liabilities and shareholders' equity	6,371	8,431	[1]
Series A Preferred Stock [Member]
Shareholders' equity:
Preferred stock			[1]
Series B, C, and D Preferred Stock [Member]
Shareholders' equity:
Preferred stock	2,911	2,911	[1]
Series E Preferred Stock [Member]
Shareholders' equity:
Preferred stock	$ 907	$ 702	[1]

[1] Derived from the audited consolidated financial statements as of and for the fiscal year ended March 31, 2018.