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Equity (Schedule of Outstanding Common Shares) (Details) $ in Thousands |  |  | 1 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Nov. 04, 2020 shares | Feb. 10, 2020 shares | Dec. 31, 2021 USD ($) shares | Sep. 30, 2021 USD ($) shares | Jun. 30, 2021 USD ($) shares | May 31, 2021 USD ($) shares | Nov. 30, 2020 USD ($) shares | Mar. 31, 2020 USD ($) shares | Jan. 31, 2020 USD ($) shares | Dec. 31, 2021 USD ($) Vote shares | Dec. 31, 2019 USD ($) shares | Dec. 31, 2018 shares | Dec. 31, 2020 USD ($) shares
Disclosure Of Share capital [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares issued |  |  | 60,238,026 |  |  |  |  |  |  | 60,238,026 |  |  | 61,029,772
Treasury Stock Purchased, Shares | 101,986 | 316,445 |  |  |  |  |  |  |  | 960,454 | 4,318,320 | 145,917 |
Number of shares outstanding |  |  | 60,200,000 |  |  |  |  |  |  | 60,200,000 | 59,200,000 |  | 61,000,000.0
Issued capital | $ |  |  | $ 60 |  |  |  |  |  |  | $ 60 | $ 59 |  | $ 61
Common Shares, Number Of Votes | Vote |  |  |  |  |  |  |  |  |  | 1 |  |  |
Stock awards One [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Share capital [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Date of common shares movement |  |  |  |  |  | May 01, 2021 | Nov. 01, 2020 | Mar. 01, 2020 | Jan. 01, 2020 |  |  |  |
Number of shares issued |  |  |  |  |  | 200,000 | 500,000 |  | 1,500,000 |  |  |  |
Treasury Stock Purchased, Shares |  |  |  |  |  |  |  | 200,000 |  |  |  |  |
Number of shares outstanding |  |  |  |  |  | 61,200,000 | 61,100,000 | 60,900,000 | 60,700,000 |  |  |  |
Issued capital | $ |  |  |  |  |  | $ 61 | $ 61 | $ 61 | $ 61 |  |  |  |
Buyback program [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Share capital [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Date of common shares movement |  |  | Dec. 01, 2021 | Sep. 01, 2021 | Jun. 01, 2021 |  | Nov. 01, 2020 | Mar. 01, 2020 |  |  |  |  |
Treasury Stock Purchased, Shares |  |  | (500,000) | 400,000 | (100,000) |  | (100,000) | (300,000) |  |  |  |  |
Number of shares outstanding |  |  | 60,200,000 | 60,700,000 | 61,100,000 |  | 61,000,000.0 | 60,600,000 |  | 60,200,000 |  |  |
Issued capital | $ |  |  | $ 60 | $ 61 | $ 61 |  | $ 61 | $ 61 |  | $ 60 |  |  |

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