Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($)	Sep. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 24,583,000	$ 6,548,000	[1]
Investments	173,000	335,000	[1]
Accounts receivable, net of allowance for doubtful accounts of $68,000 as of September 30, 2020 and $53,000 as of December 31, 2019	9,137,000	3,568,000	[1]
Accounts receivable, related party	833,000	724,000	[1]
Inventories	13,155,000	11,303,000	[1]
Prepaid expenses	4,859,000	3,587,000	[1]
Total current assets	52,740,000	26,065,000	[1]
Property and equipment, net	4,086,000	3,943,000	[1]
Goodwill	55,000	55,000	[1]
Definite-lived intangible assets, net	9,000	11,000	[1]
Right-of-use assets	2,501,000	3,178,000	[1]
Equity investment in unconsolidated affiliate	5,295,000	4,839,000	[1]
Total assets	64,686,000	38,091,000	[1]
Current liabilities:
Accounts payable	992,000	501,000	[1]
Accrued liabilities	2,969,000	920,000	[1]
Customer advance payments of orders	3,218,000		[1]
Lease liabilities	893,000	882,000	[1]
Total current liabilities	8,072,000	2,303,000	[1]
Lease liabilities, net of current portion	1,657,000	2,337,000	[1]
Deferred income tax liabilities, net	224,000	224,000	[1]
Total liabilities	9,953,000	4,864,000	[1]
Commitments
Shareholders' equity:
Common stock, $.01 par value: 50,000,000 shares authorized; 13,577,847 and 12,885,273 shares outstanding as of September 30, 2020 and December 31, 2019, respectively	136,000	129,000	[1]
Additional paid-in capital	2,539,000	708,000	[1]
Retained earnings	52,058,000	32,390,000	[1]
Total shareholders' equity	54,733,000	33,227,000	[1]
Total liabilities and shareholders' equity	$ 64,686,000	$ 38,091,000	[1]

[1] The condensed consolidated balance sheet as of December 31, 2019 has been prepared using information from the audited consolidated balance sheet as of that date.