Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Cash flows from operating activities:
Net loss	$ (1,027)	$ (1,947)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	4	277
Amortization of debt discount	125	97
Stock-based employee compensation	225	143
Loss on disposal of fixed assets	7
Write off of deposit on cancelled lease	12
Gain on sale of intangible assets		(303)
Write-off of interest in Chinese joint venture		550
Changes in operating assets and liabilities:
Accounts receivable, net	(39)	92
Prepaid expenses and other current assets	(18)	28
Accounts payable	(9)	(79)
Accrued compensation	(120)	(56)
Other accrued liabilities	432	227
Deferred revenue	(168)	(88)
Net cash used in operating  activities	(576)	(1,059)
Cash flows from investing activities:
Acquisition of property and equipment		(3)
Proceeds from the sale of intangible assets		303
Net cash provided by investing activities		300
Cash flows from financing activities:
Proceeds from advances on accounts receivable	115	120
Proceeds from issuance of short-term debt	551
Proceeds from issuance of long-term debt		655
Payment of advances on accounts receivable	(40)	(120)
Net cash provided by financing activities	626	655
Net increase (decrease) in cash and cash equivalents	50	(104)
Cash and cash equivalents at beginning of period	285	389
Cash and cash equivalents at end of period	335	285
Supplementary disclosure of cash flow information
Interest paid	2	9
Income taxes paid	2
Non-cash financing and investing transactions
Exchange of accounts receivable advances into secured promissory notes	75
Exchange of long-term unsecured convertible promissory notes for long-term unsecured promissory notes		200
Exchange of long-term unsecured convertible promissory notes for long-term secured promissory notes		250
Original issue discount on secured convertible promissory notes	$ 61