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v3.19.1

Basis of presentation for the consolidated financial statements (Details) - USD ($) $ in Thousands | Dec. 31, 2018 | Jan. 01, 2018 | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | --- | --- | ---
Disclosure Of Basis Of Presentation For Consolidated Financial Statement [Line Items] |  |  |  |
Investments classified using the equity method of accounting | $ 111,549 |  | $ 152,630 | $ 133,140
Intangible assets other than goodwill | 188,283 |  | 113,787 | 109,439
Goodwill | 34,718 | $ 37,972 | 37,972 | 37,972
Property, plant and equipment | 1,454,823 |  | 1,429,354 | 1,532,710
Total | $ 4,268,094 |  | 4,296,236 | $ 4,217,980
Balances originally reported [Member] |  |  |  |
Disclosure Of Basis Of Presentation For Consolidated Financial Statement [Line Items] |  |  |  |
Investments classified using the equity method of accounting |  |  | 146,425 |
Intangible assets other than goodwill |  |  | 105,948 |
Goodwill |  |  | 44,177 |
Property, plant and equipment |  |  | 1,437,193 |
Total |  |  | 1,733,743 |
Reclassified balances [member] |  |  |  |
Disclosure Of Basis Of Presentation For Consolidated Financial Statement [Line Items] |  |  |  |
Investments classified using the equity method of accounting |  |  | 152,630 |
Intangible assets other than goodwill |  |  | 113,787 |
Goodwill |  |  | 37,972 |
Property, plant and equipment |  |  | 1,429,354 |
Total |  |  | 1,733,743 |
Reclassification balances [Member] |  |  |  |
Disclosure Of Basis Of Presentation For Consolidated Financial Statement [Line Items] |  |  |  |
Investments classified using the equity method of accounting |  |  | 6,205 |
Intangible assets other than goodwill |  |  | 7,839 |
Goodwill |  |  | (6,205) |
Property, plant and equipment |  |  | (7,839) |
Total |  |  | $ 0 |

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