CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 79	$ 208
Accounts receivable, less allowance for doubtful accounts of $171	164	175
Inventories, less reserve of $513	330	330
Prepaid expenses	23	17
Total current assets	596	730
Property and equipment, less accumulated depreciation of $697 and $655	879	919
Intangible assets	9	9
Other assets	201	211
Total assets	1,685	1,869
Current liabilities:
Accounts payable, trade and accrued liabilities	807	849
Unearned revenue	27	27
Advances from related parties	564	600
Notes payable - current portion	455	461
Convertible debentures, less debt discount of $345 and $460	115	0
Embedded conversion derivative liabilities	662	760
Total current liabilities	2,630	2,697
Notes payable - noncurrent portion	8	9
Total liabilities	2,638	2,706
Stockholders’ deficit:
Common stock: $0.0001 par value; 22,500,000 shares authorized; 14,275,797 and 13,886,738 shares issued and outstanding	1	1
Additional paid-in capital	124,934	124,483
Accumulated deficit	(126,570)	(126,016)
Treasury stock: 150 shares at cost	(15)	(15)
Total stockholders’ deficit	(953)	(837)
Total liabilities and stockholders’ deficit	1,685	1,869
Series A Preferred Stock
Stockholders’ deficit:
Preferred stock value	448	448
Series B Preferred Stock
Stockholders’ deficit:
Preferred stock value	$ 249	$ 262