Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Operating Activities:
Net income (loss)	$ 2,287,000	$ (30,000)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	133,000	206,000
Stock-based compensation	20,000	18,000
Penalties and waived penalties on dividends	47,000	33,000
Extinguishment of U.K. cumulative translation adjustment	64,000
Gain on sale of investment		(56,000)
Changes in operating assets and liabilities:
Accounts receivable	(1,005,000)	(217,000)
Inventories	15,000	30,000
Prepaid expenses and other assets	(2,000)	(14,000)
Accounts payable and accrued expenses	421,000	291,000
Deferred revenue	598,000	11,000
Net cash provided by operating activities	2,578,000	272,000
Investing Activities:
Proceeds from sale of investments		56,000
Purchases of property and equipment	(202,000)	(20,000)
Net cash provided by (used in) investing activities	(202,000)	36,000
Financing Activities:
Borrowings on loan from officer	150,000	1,870,000
Payments on loans from officer	(1,200,000)	(1,890,000)
Principal payments on capital lease equipment	(66,000)	(139,000)
Proceeds from stock options exercised	168,000	11,000
Net cash used in financing activities	(948,000)	(148,000)
Net increase in cash and cash equivalents	1,428,000	160,000
Cash and cash equivalents at beginning of year	224,000	64,000
Cash and cash equivalents at end of year	1,652,000	224,000
SUPPLEMENTAL CASH FLOW INFORMATION:
Interest paid on leased assets	3,000	6,000
Income taxes paid
SUPPLEMENTAL DISCLOSURE OF NON CASH FINANCING ACTIVITIES:
Preferred stock dividends accrued	139,000	139,000
Purchase of equipment through capital lease	$ 128,000