Consolidated Statements of Operations and Comprehensive Loss - USD ($)
shares in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Income Statement [Abstract]      
Net sales $ 39,140,000 $ 47,833,000 $ 48,144,000
Cost of sales 34,547,000 40,414,000 39,891,000
Gross profit 4,593,000 7,419,000 8,253,000
Operating expenses:      
Selling, general and administrative 6,943,000 8,339,000 7,379,000
Research and development 0 0 588,000
Total operating expenses 6,943,000 8,339,000 7,967,000
Operating income (loss) (2,350,000) (920,000) 286,000
Other income (expense):      
Other income (expense), net (334,000)   115,000
Interest expense, net (244,000) (320,000) (126,000)
Income (loss) before benefit (provision) for income taxes (2,928,000) (1,240,000) 275,000
Benefit (provision) for income taxes 93,000 (3,000) (14,000)
Net income (loss) $ (2,835,000) $ (1,243,000) $ 261,000
Net income (loss) per share:      
Basic $ (0.20) $ (0.09) $ 0.02
Diluted $ (0.20) $ (0.09) $ 0.02
Weighted-average number of common shares outstanding:      
Basic 14,389 14,380 14,323
Diluted 14,389 14,380 14,789
Comprehensive loss:      
Net income (loss) $ (2,835,000) $ (1,243,000) $ 261,000
Foreign currency translation adjustments (1,103,000) (866,000) (708,000)
Comprehensive loss $ (3,938,000) $ (2,109,000) $ (447,000)