Unaudited Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Operating Activities:
Net income (loss)	$ 1,437	$ (221)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	96	159
Stock-based compensation	16	16
Penalties and waived penalties on dividends	34	24
Extinguishment of U.K. cumulative translation adjustment	65
Gain on sale of investment		(56)
Changes in operating assets and liabilities:
Accounts receivable	(155)	(134)
Inventories	15	15
Prepaid expenses and other assets	(120)	40
Accounts payable and accrued expenses	191	168
Deferred revenue	213	263
Net cash provided by operating activities	1,792	274
Investing Activities:
Purchases of property and equipment	(173)	(13)
Proceeds from sale of investment		56
Net cash provided by (used in) investing activities	(173)	43
Financing Activities:
Proceeds from stock options exercised	111	11
Borrowings on loans from officer	150	1,580
Payments on loans from officer	(1,200)	(1,600)
Principal payments on capital leases	(51)	(109)
Net cash used in financing activities	(990)	(118)
Net increase in cash and cash equivalents	629	199
Cash and cash equivalents at beginning of period	224	102
Cash and cash equivalents at end of period	853	263
SUPPLEMENTAL DISCLOSURE OF NON CASH FINANCING ACTIVITIES:
Preferred stock dividends accrued	104	104
Purchase of leased equipment under capital lease	$ 89