Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($)	Mar. 31, 2017	Dec. 31, 2016	[1]
Current assets:
Cash	$ 7,884,000	$ 9,456,000
Investments	500,000	607,000
Accounts receivable, net of allowance for doubtful accounts of $67,000 and $66,000 as of March 31, 2017 and December 31, 2016, respectively	5,514,000	4,648,000
Accounts receivable, unconsolidated affiliate	109,000	174,000
Inventories	10,679,000	10,994,000
Prepaid expenses and other current assets	2,956,000	3,346,000
Deferred income tax assets		438,000
Total current assets	27,642,000	29,663,000
Property and equipment, net	3,078,000	2,646,000
Goodwill	55,000	55,000
Definite-lived intangible assets, net	32,000	34,000
Equity investment in unconsolidated affiliate	3,643,000	3,538,000
Total assets	34,450,000	35,936,000
Current liabilities:
Accounts payable	1,256,000	1,005,000
Accrued liabilities	786,000	1,460,000
Total current liabilities	2,042,000	2,465,000
Deferred income tax liabilities	340,000	807,000
Total liabilities	2,382,000	3,272,000
Commitments
Shareholders' equity:
Common stock, $.01 par value: 50,000,000 shares authorized; 15,048,856 and 15,411,556 shares outstanding as of March 31, 2017 and December 31, 2016, respectively	150,000	154,000
Additional paid-in capital	8,059,000	9,990,000
Accumulated other comprehensive loss	(281,000)	(204,000)
Retained earnings	24,140,000	22,724,000
Total shareholders' equity	32,068,000	32,664,000
Total liabilities and shareholders' equity	$ 34,450,000	$ 35,936,000

[1] The condensed consolidated balance sheet as of December 31, 2016 has been prepared using information from the audited consolidated balance sheet as of that date.