Consolidated Balance Sheets - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 16,307,000	$ 23,292,000
Accounts receivable, net of allowance for doubtful accounts of $64,000 as of December 31, 2021 and $71,000 as of December 31, 2020	3,397,000	8,132,000
Accounts receivable, related party	1,383,000	905,000
Inventories	24,969,000	16,749,000
Prepaid expenses	6,943,000	6,087,000
Total current assets	52,999,000	55,165,000
Property and equipment, net	6,064,000	4,353,000
Goodwill	55,000	55,000
Definite-lived intangible assets, net	3,000	7,000
Right-of-use assets	2,648,000	3,535,000
Equity investment in unconsolidated affiliate	6,120,000	5,549,000
Total assets	67,889,000	68,664,000
Current liabilities:
Accounts payable	528,000	1,983,000
Accrued liabilities	1,250,000	2,793,000
Customer advance payments of orders	0	209,000
Lease liabilities	883,000	867,000
Total current liabilities	2,661,000	5,852,000
Lease liabilities, net of current portion	1,817,000	2,719,000
Deferred income tax liabilities, net	791,000	563,000
Total liabilities	5,269,000	9,134,000
Commitments and contingincies
Shareholders' equity:
Common stock, $.01 par value: 50,000,000 shares authorized; 13,115,341 and 13,419,847 shares outstanding as of December 31, 2021 and December 31, 2020, respectively	132,000	135,000
Additional paid-in capital	0	409,000
Retained earnings	62,488,000	58,986,000
Total shareholders' equity	62,620,000	59,530,000
Total liabilities and shareholders' equity	$ 67,889,000	$ 68,664,000