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v3.21.1

Summary of significant accounting policies (Effect of Topic 842) (Details) - USD ($) $ in Thousands | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Jan. 01, 2019 | Jan. 01, 2018 | Dec. 31, 2017
Non-current assets |  |  |  |  |  |
Lease right of use asset, net | $ 790,969 | $ 922,165 |  | $ 896,682 |  |
Current liabilities |  |  |  |  |  |
Operating lease liabilities | 56,828 | 70,147 |  | 72,272 |  |
Non-current liabilities |  |  |  |  |  |
Accrued payroll and other liabilities | 21,884 | 23,497 | $ 35,322 | 18,918 | $ 34,378 |
Operating lease liabilities | 752,613 | 861,582 |  | 840,814 |  |
Equity |  |  |  |  |  |
Retained earnings | 290,895 | 471,149 | 413,074 |  | $ 397,338 |
Accumulated other comprehensive loss | (584,860) | (519,505) |  |  |  |
Foreign currency exchange results | $ (31,707) | 12,754 | 14,874 |  |  |
Previously Reported |  |  |  |  |  |
Non-current liabilities |  |  |  |  |  |
Accrued payroll and other liabilities |  |  | 35,322 |  |  | $ 29,366
Equity |  |  |  |  |  |
Retained earnings |  |  |  |  |  | $ 401,134
ASC 842 |  |  |  |  |  |
Non-current assets |  |  |  |  |  |
Lease right of use asset, net |  | 922,165 |  | 913,000 |  |
Current liabilities |  |  |  |  |  |
Operating lease liabilities |  | 70,147 |  |  |  |
Non-current liabilities |  |  |  |  |  |
Accrued payroll and other liabilities |  | (17,587) |  |  |  |
Operating lease liabilities |  | 861,582 |  |  |  |
Equity |  |  |  |  |  |
Retained earnings |  | 3,589 |  |  |  |
Accumulated other comprehensive loss |  | 4,434 |  |  |  |
Capitalization of operating lease right of use assets |  |  |  | 913,086 |  |
Straight-line rent accrual |  |  |  | $ 16,404 |  |
Foreign currency exchange results |  | 3,589 |  |  |  |
ASC 842 | Restatement Adjustment |  |  |  |  |  |
Non-current assets |  |  |  |  |  |
Lease right of use asset, net |  |  | 896,682 |  |  |
Current liabilities |  |  |  |  |  |
Operating lease liabilities |  |  | 72,272 |  |  |
Non-current liabilities |  |  |  |  |  |
Accrued payroll and other liabilities |  |  | (16,404) |  |  |
Operating lease liabilities |  |  | $ 840,814 |  |  |
Pro Forma |  |  |  |  |  |
Non-current assets |  |  |  |  |  |
Lease right of use asset, net |  | 0 |  |  |  |
Current liabilities |  |  |  |  |  |
Operating lease liabilities |  | 0 |  |  |  |
Non-current liabilities |  |  |  |  |  |
Accrued payroll and other liabilities |  | 41,084 |  |  |  |
Operating lease liabilities |  | 0 |  |  |  |
Equity |  |  |  |  |  |
Retained earnings |  | 467,560 |  |  |  |
Accumulated other comprehensive loss |  | (523,939) |  |  |  |
Foreign currency exchange results |  | $ 9,165 |  |  |  |

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