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Selected Statements of Operations Data (Details 3) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Financial Income: |  |  |
Interest income | $ 1,775 | $ 1,455 | $ 572
Foreign currency exchange gain | 338 | 784 | 215
Financial income | 2,113 | 2,239 | 787
Financial expenses: |  |  |
Bank charges | (16) | (15) | (58)
Foreign currency exchange loss | (925) | (1,088) | (340)
Financial expenses | (941) | (1,103) | (398)
Financial income, net | $ 1,172 | $ 1,136 | $ 389

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