Consolidated Balance Sheets - USD ($)	Dec. 31, 2018	Dec. 31, 2017
Current assets:
Cash	$ 7,007,000	$ 8,763,000
Investment	258,000	343,000
Accounts receivable, net of allowance for doubtful accounts of $64,000 and $83,000 as of December 31, 2018 and 2017, respectively	4,935,000	4,597,000
Accounts receivable, related party	383,000	361,000
Inventories	9,878,000	10,249,000
Prepaid expenses	3,999,000	2,665,000
Total current assets	26,460,000	26,978,000
Property and equipment, net	3,244,000	3,158,000
Goodwill	55,000	55,000
Definite-lived intangible assets, net	16,000	21,000
Deferred income tax assets		19,000
Equity investments in unconsolidated affiliate	4,480,000	3,893,000
Total assets	34,255,000	34,124,000
Current liabilities:
Accounts payable	578,000	1,236,000
Accrued liabilities	1,342,000	1,565,000
Total current liabilities	1,920,000	2,801,000
Deferred income tax liabilities	141,000
Total liabilities	2,061,000	2,801,000
Commitments
Shareholders' equity:
Common stock, $.01 par value: 50,000,000 shares authorized; 13,502,684 and 14,290,749 shares outstanding as of December 31, 2018 and 2017, respectively	135,000	143,000
Additional paid-in capital	2,669,000	5,415,000
Accumulated other comprehensive loss		(458,000)
Retained earnings	29,390,000	26,223,000
Total shareholders' equity	32,194,000	31,323,000
Total liabilities and shareholders' equity	$ 34,255,000	$ 34,124,000