CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Cash flows from operating activities
Net loss	$ (6,822)	$ (5,952)
Adjustments to reconcile net loss to net cash used by operating activities:
Depreciation and amortization	103	123
Amortization of debt issuance costs and beneficial conversion feature	85	426
Reduction in accrued expense from the expiration of statute of limitations	(200)	0
Warrants issued in lieu of cash paid for services	0	80
Stock-based compensation	859	665
Change in assets and liabilities
Accounts receivable	150	(777)
Inventory	(35)	539
Other assets	(134)	(53)
Accounts payable	18	(128)
Deferred revenue	324	(502)
Accrued expense	(131)	(76)
Pension obligation	104	33
Total adjustments	1,143	330
Net cash used in operating activities	(5,679)	(5,622)
Cash flows from investing activities
Purchase of property and equipment	(47)	(73)
Net cash used in investing activities	(47)	(73)
Cash flows from financing activities
Proceeds from exercised stock options	1	34
Proceeds from issuance of preferred stock, net of issuance costs	1,979	9,955
Proceeds from lines of credit, net of repayments	2,150	400
Dividends paid	(25)	(25)
Net cash provided by financing activities	4,105	10,364
Effect of exchange rate changes on cash	(46)	46
Net increase (decrease) in cash and cash equivalents	(1,667)	4,715
Cash and cash equivalents at beginning of period	3,352	218
Cash and cash equivalents at end of period	1,685	4,933
Supplemental disclosure of cash flow information:
Cash paid for interest	1	1
Cash paid for income taxes	0	0
Summary of non-cash investing and financing activities:
Beneficial conversion feature of convertible debt	176	146
Conversion of related party notes into Series E Preferred	0	1,978
Stock dividend on Series E Preferred	923	774
Stock dividend on Series F Preferred	$ 12	$ 0