Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Cash Flows From Operating Activities:
Net income	$ 576,000	$ 552,000
Adjustments to reconcile net income to net cash and cash equivalents used in operating activities:
Stock-based compensation	109,000	22,000
Depreciation and amortization	244,000	243,000
Equity in income of unconsolidated affiliate	(138,000)	(109,000)
Non-cash lease expense	162,000	237,000
Changes in operating assets and liabilities:
Accounts receivable, net	(923,000)	(3,024,000)
Accounts receivable, related party	(15,000)	865,000
Inventories, net	(638,000)	303,000
Prepaid expenses	383,000	190,000
Accounts payable and accrued liabilities	(743,000)	(737,000)
Lease liabilities	(186,000)	(239,000)
Net cash and cash equivalents used in operating activities	(1,169,000)	(1,697,000)
Cash Flows From Investing Activities:
Purchases of property and equipment	(83,000)	(289,000)
Cash Flows From Financing Activities:
Proceeds from exercise of stock options	815,000	350,000
Repurchase of common stock	(1,417,000)	(833,000)
Treasury stock excise tax	(14,000)	0
Net cash and cash equivalents used in financing activities	(616,000)	(483,000)
Decrease in cash and cash equivalents	(1,868,000)	(2,469,000)
Cash and cash equivalents, beginning of the year	20,378,000	16,290,000
Cash and cash equivalents, end of the year	18,510,000	13,821,000
Supplemental disclosure of non-cash transactions:
Net non-cash changes to operating leases	$ 4,803,000	$ 0