Condensed Consolidated Balance Sheets (Unaudited) (USD $)	Mar. 31, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 4,864,000	$ 8,215,000	[1]
Investments	2,231,000	1,606,000	[1]
Accounts receivable, net of allowance for doubtful accounts of $99,000 and $85,000 as of March 31, 2014 and December 31, 2013, respectively	7,135,000	5,071,000	[1]
Inventories	14,482,000	14,140,000	[1]
Prepaid expenses	3,259,000	2,968,000	[1]
Deferred income tax assets	640,000	640,000	[1]
Total current assets	32,611,000	32,640,000	[1]
Property and equipment, net	2,938,000	3,068,000	[1]
Goodwill	55,000	55,000	[1]
Definite-lived intangible assets, net	87,000	92,000	[1]
Equity investments in unconsolidated affiliate	2,818,000	2,708,000	[1]
Total assets	38,509,000	38,563,000	[1]
Current liabilities:
Accounts payable	847,000	689,000	[1]
Accrued liabilities	583,000	1,036,000	[1]
Total current liabilities	1,430,000	1,725,000	[1]
Deferred income tax liabilities	1,412,000	1,257,000	[1]
Total liabilities	2,842,000	2,982,000	[1]
Shareholders' equity:
Common stock, $.01 par value: 50,000,000 shares authorized; 18,638,909 and 18,878,109 shares outstanding as of March 31, 2014 and December 31, 2013, respectively	186,000	189,000	[1]
Additional paid-in capital	18,476,000	18,994,000	[1]
Accumulated other comprehensive income	963,000	625,000	[1]
Retained earnings	16,042,000	15,773,000	[1]
Total shareholders' equity	35,667,000	35,581,000	[1]
Total liabilities and shareholders' equity	$ 38,509,000	$ 38,563,000	[1]

[1] The condensed consolidated balance sheet as of December 31, 2013 has been prepared using information from the audited consolidatedbalance sheet as of that date.