STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Operating activities:
Net loss	$ (2,478)	$ (2,393)
Adjustments to reconcile net loss to cash used in operating activities:
Depreciation and amortization	875	982
Share-based compensation	242	291
(Gain) Loss on disposal of equipment	(23)	4
Allowance for excess inventory quantities	52
Changes in assets and liabilities related to operations:
Trade accounts receivable	979	(153)
Other receivables	26	(13)
Inventories	111	200
Prepaid expenses and other assets	39	151
Accounts payable	(180)	355
Accrued expenses	(165)	(24)
Net cash used in operating activities	(522)	(600)
Investing activities:
Proceeds from disposal of equipment	23
Acquisition of equipment and leasehold improvements	(279)	(152)
Payment of accounts payable incurred for the purchase of equipment and leasehold improvements	(20)	(15)
Net cash used in investing activities	(276)	(167)
Financing activities:
Principal payment on capital leases	(57)	(23)
Proceeds from shareholder rights offering, net of costs		2,220
Proceeds from exercise of stock options	7	0
Net cash (used in) provided by financing activities	(50)	2,197
(Decrease) increase in cash and cash equivalents	(848)	1,430
Cash and cash equivalents at beginning of period	4,124	2,694
Cash and cash equivalents at end of period	3,276	4,124
Supplemental cash flow information:
Interest paid	12	7
Supplemental non-cash investing and financing activities:
Accounts payable incurred for the purchase of equipment and leasehold improvements	23	20
Capital lease obligations incurred in the purchase of equipment		$ 120