Consolidated Balance Sheets (USD $)	Dec. 31, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 4,554,000	$ 7,503,000
Marketable securities	293,000
Accounts receivable, net of allowance for doubtful accounts of $74,000 and $54,000 as of December 31, 2012 and 2011, respectively	6,350,000	4,725,000
Inventories	17,164,000	15,566,000
Prepaid expenses	2,299,000	2,243,000
Deferred income tax assets	554,000	572,000
Total current assets	31,214,000	30,609,000
Property and equipment, net	3,419,000	3,636,000
Goodwill	55,000	55,000
Definite-lived intangible assets, net	113,000	135,000
Equity investments in and advances to unconsolidated affiliate	2,498,000	2,435,000
Total assets	37,299,000	36,870,000
Current liabilities:
Accounts payable	860,000	702,000
Accrued liabilities	793,000	169,000
Total current liabilities	1,653,000	871,000
Deferred income tax liabilities	813,000	823,000
Total liabilities	2,466,000	1,694,000
Shareholders' equity:
Common stock, $.01 par value: 50,000,000 shares authorized; 20,044,457 and 21,122,840 shares outstanding as of December 31, 2012 and 2011, respectively	200,000	211,000
Additional paid-in capital	20,915,000	22,248,000
Accumulated other comprehensive income	24,000
Retained earnings	13,694,000	12,717,000
Total shareholders' equity	34,833,000	35,176,000
Total liabilities and shareholders' equity	$ 37,299,000	$ 36,870,000