The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months.

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Amount, before tax and reclassification, of gain (loss) from derivative instrument designated and qualifying cash flow hedge included in assessment of hedge effectiveness.

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Derivative Financial Instruments - Effect of foreign exchange derivative instruments in comprehensive loss and statement of operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in Other Comprehensive Loss	$ 3,305
Gain (Loss) Recognized in Other Comprehensive Loss		$ 6,222	$ (15,558)
Expected reclassification of gain (loss) recorded in accumulated other comprehensive loss into cost of goods sold during next twelve months	3,000
Cash flow hedge \| Derivative designated as hedging
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in Other Comprehensive Loss	3,305
Gain (Loss) Recognized in Other Comprehensive Loss		6,222	(15,558)
Foreign exchange forward \| Derivative designated as hedging
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized on unaudited condensed consolidated statements of operations	8,669	255	(1,403)
Foreign exchange forward \| Derivative designated as hedging \| Cost of goods sold
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized on unaudited condensed consolidated statements of operations	8,465	(1,410)	1,329
Foreign exchange forward \| Derivative designated as hedging \| Selling, general and administrative
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized on unaudited condensed consolidated statements of operations	204	1,665	(2,732)
Foreign exchange forward \| Cash flow hedge \| Derivative designated as hedging
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in Other Comprehensive Loss	5,490
Gain (Loss) Recognized in Other Comprehensive Loss		8,148	(15,558)
Interest rate swap
Derivative Instruments, Gain (Loss) [Line Items]
Expected reclassification of gain (loss) recorded in accumulated other comprehensive loss into cost of goods sold during next twelve months	(1,900)
Interest rate swap \| Derivative designated as hedging
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized on unaudited condensed consolidated statements of operations	(989)	(476)	0
Interest rate swap \| Derivative designated as hedging \| Interest expense, net
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized on unaudited condensed consolidated statements of operations	(989)	(476)	0
Interest rate swap \| Cash flow hedge \| Derivative designated as hedging
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in Other Comprehensive Loss	$ (2,185)
Gain (Loss) Recognized in Other Comprehensive Loss		$ (1,926)	$ 0