XML 149 R126.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Shareholders' contributions - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended | 51 Months Ended |
--- | --- | --- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2017 | Sep. 24, 2013
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |
Stock Repurchase Program, Authorized Percentage of Outstanding Stock |  |  |  |  | 5.00%
Par value per share (in usd per share) | $ 1.5 |  |  | $ 1.5 |
Purchase of treasury shares | $ 38,367 | $ 4,772 | $ 319 |  |
Treasury shares | 4,643,396 |  |  | 4,643,396 |
Share Repurchase Program |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |
Shares repurchased under program |  |  |  | 6,742,183 |
Employee share options exercised (in shares) |  |  |  | 2,101,777 |
Purchase of treasury shares | $ 38,367 | $ 4,772 | $ 320 |  |

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