CONDENSED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($)	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Operating Activities:
Net loss	$ (1,022,000)	$ (1,631,000)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	31,000	32,000
Gain on sale of property and equipment	0	(7,000)
Changes in allowance for doubtful accounts	27,000	53,000
Stock-based compensation expense	59,000	142,000
Gain on forgiveness of debt and accrued interest	0	(1,062,000)
Changes in operating assets and liabilities:
Accounts receivable	1,096,000	967,000
Inventories	(6,000)	(6,000)
Income tax receivable	(2,000)	(1,000)
Prepaid expenses and other	941,000	536,000
Accounts payable	(1,208,000)	(647,000)
Accrued liabilities	(1,170,000)	361,000
Income tax payable	19,000	17,000
Deferred revenue	(240,000)	95,000
Net cash used in operating activities	(1,475,000)	(1,151,000)
Investing Activities:
Purchases of property and equipment	(28,000)	(32,000)
Proceeds from sale of property and equipment	0	16,000
Net cash used in investing activities	(28,000)	(16,000)
Financing Activities:
Proceeds from issuance of common stock, net	39,000	26,000
Cash dividends paid ($0.70 per share)	0	(14,000)
Repuchase of common stock upon vesting of restricted stock awards	0	(9,000)
Net cash provided by financing activities	39,000	3,000
Decrease in cash and cash equivalents and restricted cash	(1,464,000)	(1,164,000)
Cash and cash equivalents and restricted cash at beginning of period	3,851,000	7,128,000
Cash and cash equivalents and restricted cash at end of period	2,387,000	5,964,000
Supplemental disclosures for cash flow information:
Cash paid during the period for income taxes	5,000	7,000
Non-cash financing activity:
Operating lease right-of-use asset obtained in exchange for lease obligation	0	33,000
Forgiveness of debt and accrued interest	0	1,062,000
Purchase of property and equipment included in accounts payable	$ 0	$ 15,000