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CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2018 | Mar. 31, 2017
Income Statement [Abstract] |  |
Net sales | $ 164,698 | $ 161,406
Cost of sales | 127,496 | 120,372
Gross profit | 37,202 | 41,034
Research and development expenses | 6,051 | 5,498
Factory transition restructuring charges | 0 | 5,250
Selling, general and administrative expenses | 30,247 | 30,651
Operating income (loss) | 904 | (365)
Interest income (expense), net | (1,070) | (393)
Other income (expense), net | (587) | 583
Income (loss) before provision for income taxes | (753) | (175)
Provision for income taxes (benefit) | (166) | (294)
Net income (loss) | $ (587) | $ 119
Earnings per share: |  |
Basic (in dollars per share) | $ (0.04) | $ 0.01
Diluted (in dollars per share) | $ (0.04) | $ 0.01
Shares used in computing earnings (loss) per share: |  |
Basic (in shares) | 14,087 | 14,449
Diluted (in shares) | 14,087 | 14,717

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