Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Operating Activities:
Net income	$ 4,465,000	$ 2,287,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	184,000	133,000
Noncash lease costs	232,000
Stock-based compensation	47,000	20,000
Penalties and waived penalties on dividends	6,000	47,000
Extinguishment of U.K. cumulative translation adjustment		64,000
Changes in operating assets and liabilities:
Accounts receivable	401,000	(1,005,000)
Inventories		15,000
Prepaid expenses and other assets	(61,000)	(2,000)
Accounts payable and accrued expenses	(496,000)	421,000
Deferred revenue	(488,000)	598,000
Net cash provided by operating activities	4,290,000	2,578,000
Investing Activities:
Purchases of property and equipment	(260,000)	(202,000)
Net cash used in investing activities	(260,000)	(202,000)
Financing Activities:
Borrowings on loan from officer		150,000
Payments on loan from officer	(1,815,000)	(1,200,000)
Payments of dividends	(714,000)
Principal payments on capital lease equipment	(58,000)	(66,000)
Proceeds from stock options exercised	239,000	168,000
Net cash used in financing activities	(2,348,000)	(948,000)
Net increase in cash and cash equivalents	1,682,000	1,428,000
Cash and cash equivalents at beginning of year	1,652,000	224,000
Cash and cash equivalents at end of year	3,334,000	1,652,000
SUPPLEMENTAL CASH FLOW INFORMATION:
Interest paid on leased assets	4,000	3,000
Interest paid on loan from officer	513,000
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