CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Cash flows from operating activities
Net loss	$ (9,351)	$ (7,668)
Adjustments to reconcile net loss to net cash used by operating activities:
Depreciation and amortization	34	54
Amortization of debt issuance costs and beneficial conversion feature	168	152
Reduction in accrued expense from the expiration of statute of limitations	0	(75)
Stock-based compensation	1,014	823
Warrants issued in lieu of cash as compensation for services	9	0
Change in fair value of derivative liabilities	186	0
Provision for losses on accounts receivable	0	15
Gain from sale of trademark	0	(50)
Change in assets and liabilities
Accounts receivable	(46)	55
Inventory	64	(77)
Other assets	(343)	(71)
Accounts payable	99	(26)
Deferred revenue	473	348
Accrued expense	502	291
Pension obligation	27	89
Total adjustments	2,187	1,528
Net cash used in operating activities	(7,164)	(6,140)
Cash flows from investing activities
Purchase of property and equipment	(27)	(1)
Proceeds received from sale of trademark	0	50
Net cash provided by (used in) in investing activities	(27)	49
Cash flows from financing activities
Proceeds from exercised stock options	149	227
Proceeds from issuance of Series A preferred stock, net of issuance costs	0	10,937
Proceeds from issuance of Series C preferred stock, net of issuance costs	8,789	0
Proceeds from lines of credit, net	0	3,350
Dividends paid	25	25
Net cash provided by financing activities	8,913	14,489
Effect of exchange rate changes on cash	19	(118)
Net increase (decrease) in cash	1,741	8,280
Cash at beginning of period	7,317	1,586
Cash at end of period	9,058	9,866
Supplemental disclosure of cash flow information:
Cash paid for interest	0	0
Cash paid for income taxes	0	0
Summary of non-cash investing and financing activities:
Beneficial conversion feature of convertible related party lines of credit	30	292
Stock dividends on Series A Convertible Preferred Stock	2,346	1,575
Stock dividends on Series C convertible redeemable preferred stock	53	0
Preferred Stock Exchange	0	1,245
Exchange of related-party indebtedness for Series A Preferred Stock	6,802	0
Conversion of Convertible Preferred Stock into Common Stock	4	0
Accretion of discount on Series C Preferred Stock	11	0
Recognition of derivative liabilities on preferred stock issuance	$ 833	$ 0