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Consolidated Statements of Operations - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Net sales $ 49,083 $ 57,254
Cost of sales 42,493 52,259
Gross profit 6,590 4,995
Operating expenses:    
Research and development 769 807
Selling and marketing 2,380 2,517
General and administrative 5,782 5,566
Total operating expenses 8,931 8,890
Loss from consolidated continuing operations (2,341) (3,895)
Net equity income from foreign joint ventures’ operations:    
Equity income from foreign joint ventures’ operations 741 2,194
Foreign joint ventures’ operations related expenses (393) (522)
Net equity income from foreign joint ventures’ operations 348 1,672
Loss from consolidated continuing operations and net equity income from foreign joint ventures’ operations (1,993) (2,223)
Other income (expense):    
Interest expense and other, net (172) (165)
Continuing operations loss before income taxes (2,165) (2,388)
Provision for (benefit from) income taxes on continuing operations 428 (334)
Net loss from continuing operations (2,593) (2,054)
Loss on discontinued operation   (2,673)
Net income (loss) before dividends on redeemable convertible preferred stock (2,593) (4,727)
Dividends on redeemable convertible preferred stock (349) (345)
Net income (loss) attributable to common stockholders [1] $ (2,942) $ (5,072)
Earnings (loss) from continuing operations per common share:    
Basic $ (0.36) $ (0.29)
Diluted $ (0.36) $ (0.29)
Weighted - average number of common shares outstanding:    
Basic 8,241,585 8,182,034
Diluted 8,241,585 8,182,034
Loss per common share from discontinued operations:    
Basic and diluted   $ (0.33)
Total earnings (loss) per common share:    
Basic $ (0.36) (0.62)
Diluted $ (0.36) $ (0.62)
Continuing Operations    
Weighted - average number of common shares outstanding:    
Basic 8,241,585 8,182,034
Diluted 8,241,585 8,182,034
[1] Net of preferred dividends of $349 and $345 in 2015 and 2014 respectively.