Financial Instruments and Fair Value Measurement (Details) - Fair Value, Inputs, Level 2 - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Receivables from hedges/derivatives	$ 4	$ 195
Prepaid expenses and other current assets	4	195
Liabilities from derivatives	13,377	23,127
Other current liabilities	1,322	296
Other liabilities (non-current)	12,055	22,831
Term loan
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of loans	647,923	667,980
Local bank loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of loans	$ 68,443	$ 75,640

Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

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