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Quarterly Financial Information - Quarterly Financial Information (Detail) (USD $)
In Thousands, except Per Share data, unless otherwise specified |
3 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
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Dec. 31, 2014
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Sep. 30, 2014
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Jun. 30, 2014
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Mar. 31, 2014
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Dec. 31, 2013
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Sep. 30, 2013
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Jun. 30, 2013
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Mar. 31, 2013
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Dec. 31, 2014
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Dec. 31, 2013
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Dec. 31, 2012
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| Quarterly Financial Information Disclosure [Abstract] | |||||||||||
| Net sales | $ 17,937 | $ 8,138 | $ 10,445 | $ 11,624 | $ 11,865 | $ 9,867 | $ 8,342 | $ 7,821 | $ 48,144 | $ 37,895 | $ 34,294 |
| Gross profit | 2,956 | 1,195 | 2,029 | 2,073 | 2,002 | 1,828 | 1,730 | 1,382 | 8,253 | 6,942 | 6,806 |
| Net income (loss) | $ 730 | $ (633) | $ 109 | $ 55 | $ 125 | $ 34 | $ (47) | $ (709) | $ 261 | $ (597) | $ (2,500) |
| Basic and diluted net income (loss) per share | $ 0.05 | $ (0.04) | $ 0.01 | $ 0.00 | $ 0.01 | $ 0.00 | $ 0.00 | $ (0.05) | |||