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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