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Derivative Contracts - Fair Value and Presentation in Consolidated Balance Sheets for Derivatives (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Derivative [Line Items]
Derivative equity	$ 1,104	$ (17)	$ (1,674)	$ 322
Foreign exchange contracts
Derivative [Line Items]
Derivative equity			(1,210)		$ 464
Foreign exchange contracts \| Other current assets \| Not Designated as Hedging Instrument
Derivative [Line Items]
Derivative Asset	0		0		464
Foreign exchange contracts \| Accrued liabilities \| Not Designated as Hedging Instrument
Derivative [Line Items]
Derivative liabilities	1,582		1,582		0
Interest rate swap agreement \| Other assets, net \| Not Designated as Hedging Instrument
Derivative [Line Items]
Derivative Asset	1,308		1,308		150
Interest rate swap agreement \| Accrued liabilities \| Not Designated as Hedging Instrument
Derivative [Line Items]
Derivative liabilities	$ 2,882		$ 2,882		$ 995