Consolidated Balance Sheets - USD ($)	Dec. 31, 2023	Dec. 31, 2022
Assets
Cash and cash equivalents	$ 20,378,000	$ 16,290,000
Inventories	20,131,000	24,397,000
Prepaid expenses	6,010,000	4,902,000
Total current assets	53,064,000	52,562,000
Property and equipment, net	5,587,000	5,742,000
Goodwill	55,000	55,000
Definite-lived intangible assets, net	0	1,000
Right-of-use assets	4,810,000	1,725,000
Equity investment in unconsolidated affiliate	5,247,000	4,718,000
Total assets	68,763,000	64,803,000
Current liabilities:
Accounts payable	802,000	674,000
Accrued liabilities	1,103,000	833,000
Lease liabilities	661,000	899,000
Total current liabilities	2,566,000	2,406,000
Lease liabilities, net of current portion	4,187,000	875,000
Deferred income tax liabilities, net	442,000	764,000
Total liabilities	7,195,000	4,045,000
Shareholders' equity:
Common stock, $.01 par value: 50,000,000 shares authorized; 11,416,212 and 12,226,306 shares outstanding as of December 31, 2023 and December 31, 2022, respectively	114,000	123,000
Additional paid-in capital	16,339,000	17,099,000
Retained earnings	46,552,000	45,025,000
Accumulated other comprehensive loss	(1,437,000)	(1,489,000)
Total shareholders' equity	61,568,000	60,758,000
Total liabilities and shareholders' equity	68,763,000	64,803,000
Nonrelated Party [Member]
Assets
Accounts receivable, net of allowance for doubtful accounts	5,503,000	5,382,000
Related Party [Member]
Assets
Accounts receivable, net of allowance for doubtful accounts	$ 1,042,000	$ 1,591,000