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DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Notional Amount and Fair Value (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Foreign currency exchange contracts | Maximum
Derivative Instruments and Hedging Activities
Term of derivative instrument	1 month
Not designated as hedging instruments | Accounts receivable, net | Receive SGD/pay USD
Derivative Instruments and Hedging Activities
Notional amount, Assets	$ 16,478	$ 18,713
Fair Value, Assets	23	41
Not designated as hedging instruments | Accounts receivable, net | Receive RSD/pay USD
Derivative Instruments and Hedging Activities
Notional amount, Assets		10,127
Fair Value, Assets		28
Not designated as hedging instruments | Accounts receivable, net | Receive USD/pay GBP
Derivative Instruments and Hedging Activities
Notional amount, Assets	24,581
Fair Value, Assets	68
Not designated as hedging instruments | Accounts receivable, net | Receive USD/pay DKK
Derivative Instruments and Hedging Activities
Notional amount, Assets	4,174
Fair Value, Assets	45
Not designated as hedging instruments | Accounts receivable, net | Receive USD/pay NZD
Derivative Instruments and Hedging Activities
Notional amount, Assets	3,880
Fair Value, Assets	21
Not designated as hedging instruments | Accrued liabilities | Receive EUR/pay USD
Derivative Instruments and Hedging Activities
Notional amount, Liabilities		1,298,899
Fair Value, Liabilities		(1,768)
Not designated as hedging instruments | Accrued liabilities | Receive RSD/pay USD
Derivative Instruments and Hedging Activities
Notional amount, Liabilities	12,381
Fair Value, Liabilities	(147)
Not designated as hedging instruments | Accrued liabilities | Receive NOK/pay USD
Derivative Instruments and Hedging Activities
Notional amount, Liabilities		4,411
Fair Value, Liabilities		(18)
Not designated as hedging instruments | Accrued liabilities | Receive USD/pay GBP
Derivative Instruments and Hedging Activities
Notional amount, Liabilities		35,256
Fair Value, Liabilities		(416)
Not designated as hedging instruments | Accrued liabilities | Receive USD/pay EUR
Derivative Instruments and Hedging Activities
Notional amount, Liabilities	233
Fair Value, Liabilities	(1)
Not designated as hedging instruments | Accrued liabilities | Receive USD/pay RUB
Derivative Instruments and Hedging Activities
Notional amount, Liabilities	8,947	7,780
Fair Value, Liabilities	(69)	(40)
Not designated as hedging instruments | Accrued liabilities | Receive USD/pay AUD
Derivative Instruments and Hedging Activities
Notional amount, Liabilities	218	8,508
Fair Value, Liabilities	(1)	(130)
Not designated as hedging instruments | Accrued liabilities | Receive USD/pay CNY
Derivative Instruments and Hedging Activities
Notional amount, Liabilities	12,334	12,344
Fair Value, Liabilities	(56)	(50)
Not designated as hedging instruments | Accrued liabilities | Receive USD/pay COP
Derivative Instruments and Hedging Activities
Notional amount, Liabilities	8,594	5,436
Fair Value, Liabilities	(81)	(93)
Not designated as hedging instruments | Accrued liabilities | Receive USD/pay ZAR
Derivative Instruments and Hedging Activities
Notional amount, Liabilities	3,657	2,403
Fair Value, Liabilities	$ (19)	(106)
Not designated as hedging instruments | Accrued liabilities | Receive USD/pay DKK
Derivative Instruments and Hedging Activities
Notional amount, Liabilities		3,151
Fair Value, Liabilities		(3)
Not designated as hedging instruments | Accrued liabilities | Receive USD/pay NZD
Derivative Instruments and Hedging Activities
Notional amount, Liabilities		2,290
Fair Value, Liabilities		(13)
Not designated as hedging instruments | Accrued liabilities | Receive SEK/pay USD
Derivative Instruments and Hedging Activities
Notional amount, Liabilities		2,275
Fair Value, Liabilities		$ (10)

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- Definition

Nominal or face amount used to calculate payments on the derivative asset.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
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