CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Operating activities
Net loss	$ (676)	$ (356)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation expense included in operating expenses	40	48
Depreciation expense included in cost of sales	43	40
Allowance for slow-moving inventory	213	33
Fair value of common stock and common stock warrants issued for services rendered	74	80
Stock-based compensation expense	878	1,270
Change in fair value of stock option liability and derivative instruments	(502)	(309)
Interest expense attributable to amortization of debt issuance costs	8	5
Changes in operating assets and liabilities:
Trade receivables	(155)	332
Inventories	936	(1,179)
Prepaid expenses and other current assets	45	7
Other non-current assets	0	8
Trade payables to related parties	(294)	360
Trade payables and other accrued expenses	(322)	171
Accrued compensation and benefits	(238)	(268)
Income taxes payable	(23)	(77)
Deferred revenue and customer deposits	0	(29)
Long-term deferred rent	13	43
Net cash provided by operating activities	40	179
Investing activities
Capital expenditures	(36)	(39)
Investment in note receivable	(300)	0
Net cash used by investing activities	(336)	(39)
Financing activities
Proceeds from issuance of common stock, net of issuance costs	15	1
Debt issuance costs	(8)	(8)
Net cash provided (used) by financing activities	7	(7)
(Decrease) increase in cash and cash equivalents	(289)	133
Cash and cash equivalents at beginning of year	2,455	2,322
Cash and cash equivalents at end of year	2,166	2,455
Supplemental disclosures of cash flow information:
Interest	2	0
Income taxes	45	163
Non-cash investing and financing activities:
Transfer of deposits to fixed assets	$ 26	$ 29