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Basis of presentation (Tables) | 12 Months Ended
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Dec. 31, 2020
Text Block [Abstract] |
Summary of Reconciliation Of Changes In Cash Flow Statement | This correction of classification resulted in the following impact to the Statement of Cash Flows:
|  | Year ended December 31, 2019 |  |  | Year ended December 31, 2018 |
|  | As reported |  |  | Adjustment |  |  | As revised |  |  | As reported |  |  | Adjustment |  |  | As revised |
(Increase) decrease in other assets |  |  | (4,419 | ) |  |  | 2,922 |  |  |  | (1,497 | ) |  |  | (7,493 | ) |  |  | 13,101 |  |  |  | 5,608 |
Net cash provided by operating activities |  |  | 68,045 |  |  |  | 2,922 |  |  |  | 70,967 |  |  |  | 7,583 |  |  |  | 13,101 |  |  |  | 20,684 |
Cash paid for investments classified in Other financial assets |  |  | — |  |  |  | (20,473 | ) |  |  | (20,473 | ) |  |  | — |  |  |  | (13,101 | ) |  |  | (13,101 | )
Cash received from maturity of investments classified in Other financial assets |  |  | — |  |  |  | 17,551 |  |  |  | 17,551 |  |  |  | — |  |  |  | — |  |  |  | — |
Net cash used in investing activities |  |  | (2,137 | ) |  |  | (2,922 | ) |  |  | (5,059 | ) |  |  | (413 | ) |  |  | (13,101 | ) |  |  | (13,514 | )
Total effect on Cash Flow |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
|  | Three months ended March 31, 2020 |  |  | Six months ended June 30, 2020 |
|  | As reported |  |  | Adjustment |  |  | As revised |  |  | As reported |  |  | Adjustment |  |  | As revised |
(Increase) decrease in other assets |  |  | (17,209 | ) |  |  | 16,836 |  |  |  | (373 | ) |  |  | 14,917 |  |  |  | (16,023 | ) |  |  | (1,106 | )
Net cash provided by/ (used in) operating activities |  |  | (28,286 | ) |  |  | 16,836 |  |  |  | (11,450 | ) |  |  | (11,716 | ) |  |  | (16,023 | ) |  |  | (27,739 | )
Cash paid for investments classified in Other financial assets |  |  | — |  |  |  | (32,859 | ) |  |  | (32,859 | ) |  |  | — |  |  |  | (32,859 | ) |  |  | (32,859 | )
Cash received from maturity of investments classified in Other financial assets |  |  | — |  |  |  | 16,023 |  |  |  | 16,023 |  |  |  | — |  |  |  | 48,882 |  |  |  | 48,882 |
Net cash provided by/ (used in) investing activities |  |  | (2,387 | ) |  |  | (16,836 | ) |  |  | (19,223 | ) |  |  | (4,550 | ) |  |  | 16,023 |  |  |  | 11,473 |
Total effect on Cash Flow |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |

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