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v3.19.3.a.u2

Fair value measurements (Financial assets and liabilities measured at fair value on recurring basis) (Details) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Assets |  |
Derivative assets | $ 11,664 | $ 69,105
Liabilities |  |
Derivative liabilities (Note 11) | 97,066 | 29,321
Recurring |  |
Assets |  |
Derivative assets | 11,664 | 69,105
Liabilities |  |
Derivative liabilities (Note 11) | 97,066 | 29,321
Recurring | Level 1 |  |
Assets |  |
Derivative assets | 0 | 0
Liabilities |  |
Derivative liabilities (Note 11) | 0 | 0
Recurring | Level 2 |  |
Assets |  |
Derivative assets | 11,664 | 69,105
Liabilities |  |
Derivative liabilities (Note 11) | 97,066 | 29,321
Recurring | Level 3 |  |
Assets |  |
Derivative assets | 0 | 0
Liabilities |  |
Derivative liabilities (Note 11) | $ 0 | $ 0

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