Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
OPERATING ACTIVITIES
Net (loss) income	$ (3,088,000)	$ 31,789,000
Adjustments to reconcile net income to net cash (used in) provided by operating activities:
Depreciation	486,000	361,000
Amortization of finite-lived intangible assets	56,000	56,000
Stock-based compensation	383,000	116,000
Gain on equity investment in unconsolidated subsidiary		(59,453,000)
Realized gain on sale of marketable securities	(112,000)
Unrealized loss on marketable securities	4,561,000	18,665,000
Non-cash donation of IRNT common stock, net of realized gain		1,060,000
Deferred income taxes	(1,146,000)	9,089,000
Changes in operating assets and liabilities:
Increase in accounts receivable, net	(955,000)	(909,000)
(Increase) decrease in inventories, net	(2,092,000)	20,000
Decrease (increase) in prepaid expenses and other assets	284,000	(148,000)
Increase (decrease) in accounts payable, accrued compensation, income taxes and commissions and other	792,000	(419,000)
Net cash (used in) provided by operating activities	(831,000)	227,000
INVESTING ACTIVITIES
Subscription agreement funding (Note C)		(2,725,000)
Capital expenditures	(663,000)	(759,000)
Proceeds from sale of marketable securities	1,661,000	758,000
Purchase of marketable securities	(7,013,000)	(270,000)
Net cash used in investing activities	(6,015,000)	(2,996,000)
FINANCING ACTIVITIES
Payment for taxes related to net share settlement of equity awards	(50,000)
Exercise of stock options	191,000	31,000
Prepaid financing costs	(20,000)
Net cash provided by financing activities	121,000	31,000
Decrease in cash and cash equivalents	(6,725,000)	(2,738,000)
Cash and cash equivalents at beginning of period	29,016,000	18,331,000
Cash and cash equivalents at end of period	22,291,000	15,593,000
Noncash Investing Activity:
Distribution of IRNT securities by Sponsor (unconsolidated subsidiary)		65,250,000
Supplemental Disclosure:
Income taxes paid	$ 741,000	$ 40,000