Consolidated Balance Sheets (USD $)	Dec. 31, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 8,215,000	$ 4,554,000
Investments	1,606,000	293,000
Accounts receivable, net of allowance for doubtful accounts of $85,000 and $74,000 as of December 31, 2013 and 2012, respectively	5,071,000	6,350,000
Inventories	14,140,000	17,164,000
Prepaid expenses	2,968,000	2,299,000
Deferred income tax assets	640,000	554,000
Total current assets	32,640,000	31,214,000
Property and equipment, net	3,068,000	3,419,000
Goodwill	55,000	55,000
Definite-lived intangible assets, net	92,000	113,000
Equity investments in and advances to unconsolidated affiliate	2,708,000	2,498,000
Total assets	38,563,000	37,299,000
Current liabilities:
Accounts payable	689,000	860,000
Accrued liabilities	1,036,000	793,000
Total current liabilities	1,725,000	1,653,000
Deferred income tax liabilities	1,257,000	813,000
Total liabilities	2,982,000	2,466,000
Commitments (Notes 9 and 12)
Shareholders' equity:
Common stock, $.01 par value: 50,000,000 shares authorized; 18,878,109 and 20,044,457 shares outstanding as of December 31, 2013 and 2012, respectively	189,000	200,000
Additional paid-in capital	18,994,000	20,915,000
Accumulated other comprehensive income	625,000	24,000
Retained earnings	15,773,000	13,694,000
Total shareholders' equity	35,581,000	34,833,000
Total liabilities and shareholders' equity	$ 38,563,000	$ 37,299,000