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Condensed Consolidated Statements Of Operations (USD $)
In Thousands, except Share data, unless otherwise specified
 3 Months Ended
Mar. 31, 2012
Mar. 31, 2011
Condensed Consolidated Statements Of Operations [Abstract]    
Revenue $ 14,432 $ 12,068
Cost of sales 12,660 10,871
Gross profit 1,772 1,197
Operating expenses:    
Research and development 25 123
Selling and marketing 721 611
General and administrative 1,225 1,057
Total operating expenses 1,971 1,791
Loss from operations (199) (594)
Net equity income from foreign joint ventures' operations:    
Equity income from foreign joint ventures' operations 771 237
Foreign joint ventures' operations related expenses (100) (129)
Net equity income from foreign joint ventures' operations 671 108
Income (loss) from domestic operations and net equity income from foreign joint ventures' operations 472 (486)
Interest expense and other, net (49) (45)
Income (loss) before income taxes 423 (531)
Provision for (benefit from) income taxes 89 (207)
Net income (loss) $ 334 $ (324)
Earnings (loss) per common share:    
Basic and diluted $ 0.04 $ (0.04)
Weighted-average number of common shares outstanding:    
Basic 7,857,650 7,756,441
Diluted 8,494,545 7,756,441