DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Notional Amount and Fair Value (Details) - USD ($) $ in Thousands	9 Months Ended
Sep. 30, 2020	Dec. 31, 2019
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 EUR/pay USD
Derivative Instruments and Hedging Activities
Notional amount, Assets		$ 26,731
Fair Value, Assets		246
Not designated as hedging instruments \| Accounts receivable, net \| Receive SGD/pay USD
Derivative Instruments and Hedging Activities
Notional amount, Assets	$ 13,748
Fair Value, Assets	90
Not designated as hedging instruments \| Accounts receivable, net \| Receive RSD/pay USD
Derivative Instruments and Hedging Activities
Notional amount, Assets	14,253	9,018
Fair Value, Assets	63	59
Not designated as hedging instruments \| Accounts receivable, net \| Receive NOK/pay USD
Derivative Instruments and Hedging Activities
Notional amount, Assets	2,579	2,122
Fair Value, Assets	32	17
Not designated as hedging instruments \| Accounts receivable, net \| Receive USD/pay SGD
Derivative Instruments and Hedging Activities
Notional amount, Assets		1,555
Fair Value, Assets		7
Not designated as hedging instruments \| Accrued liabilities \| Receive USD/pay GBP
Derivative Instruments and Hedging Activities
Notional amount, Liabilities	51,990	38,406
Fair Value, Liabilities	(282)	(695)
Not designated as hedging instruments \| Accrued liabilities \| Receive USD/pay EUR
Derivative Instruments and Hedging Activities
Notional amount, Liabilities	35,815
Fair Value, Liabilities	(182)
Not designated as hedging instruments \| Accrued liabilities \| Receive USD/pay RUB
Derivative Instruments and Hedging Activities
Notional amount, Liabilities	9,343	12,777
Fair Value, Liabilities	(162)	(55)
Not designated as hedging instruments \| Accrued liabilities \| Receive USD/pay AUD
Derivative Instruments and Hedging Activities
Notional amount, Liabilities	9,448	12,819
Fair Value, Liabilities	(145)	(172)
Not designated as hedging instruments \| Accrued liabilities \| Receive USD/pay CNY
Derivative Instruments and Hedging Activities
Notional amount, Liabilities	11,915
Fair Value, Liabilities	(70)
Not designated as hedging instruments \| Accrued liabilities \| Receive USD/pay COP
Derivative Instruments and Hedging Activities
Notional amount, Liabilities	4,670	3,793
Fair Value, Liabilities	(61)	(18)
Not designated as hedging instruments \| Accrued liabilities \| Receive USD/pay ZAR
Derivative Instruments and Hedging Activities
Notional amount, Liabilities	1,542	3,349
Fair Value, Liabilities	(39)	(32)
Not designated as hedging instruments \| Accrued liabilities \| Receive USD/pay DKK
Derivative Instruments and Hedging Activities
Notional amount, Liabilities	1,367	1,283
Fair Value, Liabilities	(3)	(11)
Not designated as hedging instruments \| Accrued liabilities \| Receive USD/pay NZD
Derivative Instruments and Hedging Activities
Notional amount, Liabilities	1,247	3,071
Fair Value, Liabilities	$ (11)	$ (33)

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

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5579245-113959

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5580258-113959

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5579245-113959

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- Definition

Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 55
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226000-175313

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 20
-Section 50
-Paragraph 4D
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
-Paragraph 4B
-Subparagraph (a),(c)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624163-113959

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- Definition

Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 20
-Section 50
-Paragraph 4D
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=118948506&loc=SL51823488-111719

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Topic 815
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226000-175313

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5579245-113959

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5580258-113959

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5579245-113959

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- Definition

Period the derivative contract is outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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