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CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Revenue: |  |  |
Total revenues | $ 93,178 | $ 106,527 | $ 95,794
Cost of revenue: |  |  |
Total cost of revenues | 84,787 | 86,083 | 76,757
Gross profit | 8,391 | 20,444 | 19,037
Operating expenses: |  |  |
Research and development, net | 553 | 731 | 1,140
Selling and marketing | 4,913 | 4,974 | 3,876
General and administrative | 8,559 | 9,409 | 10,023
Other expenses (income) | (4) | 53 | (138)
Total operating expenses | 14,021 | 15,167 | 14,901
Operating income (loss) | (5,630) | 5,277 | 4,136
Financial expenses | (1,569) | (1,132) | (1,139)
Financial income | 1,467 | 794 | 985
Income (loss) before taxes on income (tax benefit) | (5,732) | 4,939 | 3,982
Taxes on income (tax benefit) | (1,464) | 2,333 | 3,865
Income (loss) before equity investment | (4,268) | 2,606 | 117
Share in results of equity investment of affiliated companies | (140) | (210) | (55)
Net income (loss) | $ (4,408) | $ 2,396 | $ 62
Net income (loss) per share basic and diluted | $ (0.50) | $ 0.27 | $ 0.01
Weighted average number of shares outstanding: |  |  |
Basic | 8,864,885 | 8,848,028 | 8,828,444
Diluted | 8,864,885 | 8,909,072 | 8,830,764
Product [Member] |  |  |
Revenue: |  |  |
Total revenues | $ 23,151 | $ 36,053 | $ 30,431
Cost of revenue: |  |  |
Total cost of revenues | 23,807 | 28,096 | 23,788
Service [Member] |  |  |
Revenue: |  |  |
Total revenues | 70,027 | 70,474 | 65,363
Cost of revenue: |  |  |
Total cost of revenues | $ 60,980 | $ 57,987 | $ 52,969

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