CONDENSED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($)	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Operating Activities:
Net income (loss)	$ 10,779,000	$ (2,552,000)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	46,000	46,000
Gain on sale of property and equipment	0	(7,000)
Changes in allowance for doubtful accounts	(50,000)	34,000
Stock-based compensation expense	91,000	198,000
Gain on forgiveness of debt and accrued interest	0	(1,062,000)
Changes in operating assets and liabilities:
Accounts receivable	574,000	1,620,000
Inventories	(18,000)	(2,000)
Income taxes receivable	4,000	(1,000)
Prepaid expenses and other	389,000	(27,000)
Accounts payable	(587,000)	(1,655,000)
Accrued liabilities	(740,000)	28,000
Income taxes payable	482,000	0
Accrued income taxes	(659,000)	26,000
Deferred revenue	77,000	31,000
Net cash provided by (used in) operating activities	10,388,000	(3,323,000)
Investing Activities:
Purchases of property and equipment	(25,000)	(81,000)
Sale of property and equipment	0	16,000
Net cash used in investing activities	(25,000)	(65,000)
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	(18,000)
Net cash provided by (used in) financing activities	39,000	(6,000)
Increase (decrease) in cash and cash equivalents and restricted cash	10,402,000	(3,394,000)
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	14,253,000	3,734,000
Supplemental disclosures for cash flow information:
Cash paid during the period for income taxes	5,000	6,000
Non-cash financing activity:
Operating lease right-of-use asset obtained in exchange for lease obligation	0	219,000
Forgiveness of debt and accrued interest	0	1,062,000
Purchase of property and equipment included in accounts payable	$ 0	$ 13,000