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v3.20.2

Fair value measurements (Financial assets and liabilities measured at fair value on recurring basis) (Details) - USD ($) $ in Thousands | Jun. 30, 2020 | Dec. 31, 2019
--- | --- | ---
Assets |  |
Derivative assets, fair value | $ 1,852 | $ 11,664
Liabilities |  |
Derivative liabilities, fair value | 200,014 | 97,066
Recurring |  |
Assets |  |
Derivative assets, fair value | 1,852 | 11,664
Liabilities |  |
Derivative liabilities, fair value | 200,014 | 97,066
Recurring | Level 1 |  |
Assets |  |
Derivative assets, fair value | 0 | 0
Liabilities |  |
Derivative liabilities, fair value | 0 | 0
Recurring | Level 2 |  |
Assets |  |
Derivative assets, fair value | 1,852 | 11,664
Liabilities |  |
Derivative liabilities, fair value | 200,014 | 97,066
Recurring | Level 3 |  |
Assets |  |
Derivative assets, fair value | 0 | 0
Liabilities |  |
Derivative liabilities, fair value | $ 0 | $ 0

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