Condensed Consolidated Statements of Cash Flow (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Cash Flows From Operating Activities:
Net loss	$ (4,459)	$ (4,263)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	49	37
Amortization	155
Provision for inventory reserve	328
Bad debt expense	390
Stock-based compensation	1,691	1,335
Derivative charges and credits		28
Impairment charge	5
Changes in operating assets and liabilities:
(Increase) in accounts receivable	(727)	(443)
(Increase) decrease in inventories	(1,999)	76
(Increase) decrease in prepaid expenses and other assets	(600)	(61)
Increase (decrease) in accounts payable and accrued expenses	78	137
Net cash used in operating activities	(5,089)	(3,154)
Cash Flows From Investing Activities:
Additions to fixed assets	(23)	(373)
Acquisition of intangible assets	(6)	(2)
Net cash used in investing activities	(29)	(375)
Cash Flows From Financing Activities:
Proceeds from issuance of common stock	6,234
Offering costs	(317)
Net cash provided by financing activities	6,234
Net increase (decrease) in cash	1,116	(3,529)
Cash at beginning of period	451	3,980
Cash at end of period	1,567	451
Cash paid during the year for:
Interest	4
Income taxes, net of refunds	2	2
Supplemental schedule of non-cash investing and financing activities:
Warrants issued with common stock	4,973
Patent acquired in exchange for royalties obligation	101
Forfeiture of restricted stock for prepaid consulting services	(70)
Stock issued for prepaid consulting services		70
Conversion of derivative liability to accrued expense		$ 150