Consolidated Balance Sheets - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 23,292,000	$ 6,548,000
Investment	0	335,000
Accounts receivable, net of allowance for doubtful accounts of $71,000 as of December 31, 2020 and $53,000 as of December 31, 2019	8,132,000	3,568,000
Accounts receivable, related party	905,000	724,000
Inventories	16,749,000	11,303,000
Prepaid expenses	6,225,000	3,587,000
Total current assets	55,303,000	26,065,000
Property and equipment, net	4,353,000	3,943,000
Goodwill	55,000	55,000
Definite-lived intangible assets, net	7,000	11,000
Right-of-use assets	3,535,000	3,178,000
Equity investment in unconsolidated affiliate	5,549,000	4,839,000
Total assets	68,802,000	38,091,000
Current liabilities:
Accounts payable	1,983,000	501,000
Accrued liabilities	2,793,000	920,000
Customer advance payments of orders	209,000
Lease liabilities	867,000	882,000
Total current liabilities	5,852,000	2,303,000
Lease liabilities, net of current portion	2,719,000	2,337,000
Deferred income tax liabilities, net	211,000	224,000
Total liabilities	8,782,000	4,864,000
Commitments
Shareholders' equity:
Common stock, $.01 par value: 50,000,000 shares authorized; 13,419,847 and 12,885,273 shares outstanding as of December 31, 2020 and December 31, 2019, respectively	135,000	129,000
Additional paid-in capital	409,000	708,000
Retained earnings	59,476,000	32,390,000
Total shareholders' equity	60,020,000	33,227,000
Total liabilities and shareholders' equity	$ 68,802,000	$ 38,091,000