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Equity - Summary Status of DSIT Plan (Details) (Parenthetical) |  | 12 Months Ended
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Apr. 21, 2016 NewIsraeliShekels shares | Dec. 31, 2016 shares | Dec. 31, 2015 NewIsraeliShekels shares | Dec. 31, 2014 NewIsraeliShekels
Number of options, exercise price was NIS 9.38 |  |  |  |  |
DSIT Stock Option Plan [Member] |  |  |  |  |
Number of options, exercise price was NIS 9.38 | [1] |  | (239,524) |  |
DSIT Stock Option Plan [Member] | NIS [Member] |  |  |  |  |
Number of options, exercise price was NIS 9.38 |  | 91,754 |  |  |
Exercise price of options exchange rate | NewIsraeliShekels |  | 9.38 |  |  |
Exchange rate | NewIsraeliShekels |  | 3.97 |  | 3.90 | 3.89
[1] | The exercise price of 91,754 of these options was NIS 9.38 translated to US dollars using following exchange rates: NIS 3.89 for December 31, 2014, NIS 3.90 for December 31, 2015, and 3.97 for the Closing Date.

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