Derivatives and Hedging Instruments - Effects of Derivatives (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Derivative [Line Items]
Gain (Loss) Recognized in OCI	$ 1,553	$ 564	$ 2,936	$ (2,990)
Derivatives Designated as Hedging Instruments \| Foreign currency exchange contracts \| Cash Flow Hedging \| Salaries and employee benefits
Derivative [Line Items]
Gain (Loss) Recognized in OCI	0	48	0	(341)
Gain (Loss) Reclassified from OCI into Income (Loss)	0	(78)	0	49
Derivatives Designated as Hedging Instruments \| Foreign currency exchange contracts \| Cash Flow Hedging \| General and administrative expenses
Derivative [Line Items]
Gain (Loss) Recognized in OCI	0	1	0	(44)
Gain (Loss) Reclassified from OCI into Income (Loss)	0	(6)	0	11
Derivatives Designated as Hedging Instruments \| Interest rate swap agreements \| Cash Flow Hedging \| Interest expense
Derivative [Line Items]
Gain (Loss) Recognized in OCI	(37)	(558)	(48)	(7,265)
Gain (Loss) Reclassified from OCI into Income (Loss)	(2,268)	(2,012)	(4,539)	(3,100)
Derivatives Designated as Hedging Instruments \| Interest rate cap contracts \| Cash Flow Hedging \| Interest expense
Derivative [Line Items]
Gain (Loss) Recognized in OCI	(127)	(735)	68	(2,131)
Gain (Loss) Reclassified from OCI into Income (Loss)	(109)	(96)	(216)	(2,638)
Derivatives Designated as Hedging Instruments \| Cross-currency swap agreements \| Cash Flow Hedging \| Interest expense / Other (expense) income
Derivative [Line Items]
Gain (Loss) Recognized in OCI	3,507	0	(14,822)	0
Gain (Loss) Reclassified from OCI into Income (Loss)	$ 3,665	$ 0	$ (13,863)	$ 0

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 10A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=121641772&loc=SL7669646-108580

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=121641772&loc=d3e637-108580

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Amount, after tax, of reclassification of gain (loss) from accumulated other comprehensive income (AOCI) for derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=121641772&loc=d3e689-108580

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=121641772&loc=d3e637-108580

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