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Equity (Share-based Payments to Employees, Non-marketable Options, Exercise Price) (Details) - $ / shares
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Granted 2014 US Dollar [Member]      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Exercise price for options outstanding $ 0 $ 7.15 $ 6.77
Granted 2015 US Dollar [Member]      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Exercise price for options outstanding 0 0 6.92
Granted 2016 US Dollar [Member]      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Exercise price for options outstanding 4.56 4.36 4.21
Granted 2017 US Dollar [Member]      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Exercise price for options outstanding 4.17 4.01 3.89
Granted 2018 US Dollar [Member]      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Exercise price for options outstanding 4.12 3.99 3.89
Granted 2019 US Dollar [Member]      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Exercise price for options outstanding $ 5.66 $ 5.42 $ 0