CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Cash flows from operating activities
Net loss	$ (1,690)	$ (2,773)
Adjustments to reconcile net loss to net cash used by operating activities:
Depreciation and amortization	42	26
Amortization of debt issuance costs	(211)	(104)
Reduction in accounts payable and accrued liabilities from the expiration of statute of limitations	78
Change in fair value of derivative liabilities		1,176
Warrants issued in lieu of cash paid for services		1
Stock-based compensation	217	126
Change in assets and liabilities
Accounts receivable	(189)	(204)
Inventory	(63)	(109)
Other assets	21	(6)
Accounts payable	(45)	(105)
Deferred revenue	(46)	25
Accrued expenses	121	(53)
Pension obligation	15	3
Total adjustments	(60)	776
Net cash used in operating activities	(1,750)	(1,997)
Cash flows from investing activities
Purchase of property and equipment	(17)	(49)
Net cash used in investing activities	(17)	(49)
Cash flows from financing activities
Proceeds from exercised stock options	24	2
Proceeds from exercised warrants to purchase stock	1,548	16
Net cash provided by financing activities	1,572	18
Effect of exchange rate changes on cash	(9)	8
Net decrease in cash and cash equivalents	(204)	(2,020)
Cash and cash equivalents at beginning of period	2,363	4,225
Cash and cash equivalents at end of period	2,159	2,205
Supplemental disclosure of cash flow information:
Cash paid for interest
Cash paid for income taxes
Summary of non-cash investing and financing activities:
Reclassification of warrants previously classified as derivative liabilities to additional paid-in capital	57	626
Issuance of common stock warrants securing line of credit borrowing facility	$ 127	$ 580