Condensed Consolidated Balance Sheets (Unaudited) - USD ($)	Mar. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 13,821,000	$ 16,290,000	[1]
Inventories	24,094,000	24,397,000	[1]
Prepaid expenses	4,712,000	4,902,000	[1]
Total current assets	51,759,000	52,562,000	[1]
Property and equipment, net	5,788,000	5,742,000	[1]
Goodwill	55,000	55,000	[1]
Definite-lived intangible assets, net	1,000	1,000	[1]
Right-of-use assets	1,488,000	1,725,000	[1]
Equity investment in unconsolidated affiliate	4,964,000	4,718,000	[1]
Total assets	64,055,000	64,803,000	[1]
Current liabilities:
Accounts payable	383,000	674,000	[1]
Accrued liabilities	387,000	833,000	[1]
Lease liabilities	903,000	899,000	[1]
Total current liabilities	1,673,000	2,406,000	[1]
Lease liabilities, net of current portion	632,000	875,000
Deferred income tax liabilities, net	764,000	764,000
Total liabilities	3,069,000	4,045,000
Commitments and Contingencies
Shareholders' equity:
Common stock, $.01 par value: 50,000,000 shares authorized; 12,135,556 and 12,226,306 shares outstanding as of March 31, 2023 and December 31, 2022, respectively	122,000	123,000	[1]
Retained earnings	62,216,000	62,124,000	[1]
Accumulated other comprehensive loss	(1,352,000)	(1,489,000)
Total shareholders' equity	60,986,000	60,758,000	[1]
Total liabilities and shareholders' equity	64,055,000	64,803,000	[1]
Nonrelated Party [Member]
Current assets:
Accounts receivable, net of allowance for doubtful accounts	8,406,000	5,382,000	[1]
Related Party [Member]
Current assets:
Accounts receivable, net of allowance for doubtful accounts	$ 726,000	$ 1,591,000	[1]

[1] The condensed consolidated balance sheet as of December 31, 2022, has been prepared using information from the audited consolidated balance sheet as of that date.