Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Cash Flows From Operating Activities:
Net income	$ 4,189,000	$ 3,282,000
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Share-based compensation	170,000	147,000
Depreciation and amortization	925,000	814,000
Equity in income of unconsolidated affiliate	(477,000)	(87,000)
Non-cash lease expense	744,000	923,000
Deferred income taxes	(322,000)	(27,000)
Changes in operating assets and liabilities:
Accounts receivable, net	(121,000)	(1,985,000)
Accounts receivable, related party	549,000	(208,000)
Inventories	4,266,000	572,000
Prepaid expenses	(1,108,000)	2,043,000
Accounts payable and accrued liabilities	398,000	(271,000)
Lease liabilities	(785,000)	(926,000)
Net cash provided by operating activities	8,458,000	4,277,000
Cash Flows From Investing Activities:
Purchases of property and equipment	(792,000)	(492,000)
Cash Flows From Financing Activities:
Proceeds from exercise of stock options	464,000	80,000
Repurchase of common stock	(4,002,000)	(3,882,000)
Treasury stock excise tax	(40,000)	0
Net cash used in financing activities	(3,578,000)	(3,802,000)
Increase (decrease) in cash and cash equivalents	4,088,000	(17,000)
Cash and cash equivalents, beginning of the period	16,290,000	16,307,000
Cash and cash equivalents, end of the period	20,378,000	16,290,000
Supplemental disclosure of cash flow information:
Cash paid for income taxes	1,524,000	443,000
Supplemental disclosure of non-cash transactions:
Net non-cash changes to operating leases	$ 3,859,000	$ 0