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FAIR VALUE MEASUREMENT (Tables)

12 Months Ended

Dec. 31, 2020

FAIR VALUE MEASUREMENT

Schedule of fair value of derivative instruments on the consolidated balance sheets

​

​	​	​	​	​	​	​	​	​
​	​	Fair Value of Derivative Assets
​	​	At December 31, 2019			​	At December 31, 2020
​		Balance Sheet Location		Fair Value		Balance Sheet Location		Fair Value
​	​	​	​	$	​	​	​	$
Foreign exchange forward contracts		Derivative assets — current		5,097		Derivative assets — current		22,178
Foreign exchange option contracts	​	Derivative assets — current	​	450	​	Derivative assets — current	​	1,173
​	​	Total		5,547	​	Total	​	23,351

​

​	​	​	​	​	​	​	​	​
​	​	Fair Value of Derivative Liabilities
​	​	At December 31, 2019			​	At December 31, 2020
​		Balance Sheet Location		Fair Value		Balance Sheet Location		Fair Value
​	​	​	​	$	​	​	​	$
Foreign exchange forward contracts	​	Derivative liabilities — current	​	10,127	​	Derivative liabilities — current	​	10,753
Foreign exchange option contracts	​	Derivative liabilities — current	​	25	​	Derivative liabilities — current	​	2
Interest rate swap	​	Derivative liabilities — current	​	329	​	Derivative liabilities — current	​	—
Interest rate swap	​	Derivative liabilities — non-current	​	1,841	​	Derivative liabilities — non-current	​	—
​		Total		12,322		Total		10,755

Schedule of effect of derivative instruments on consolidated statements of operations

​

​	​	​	​	​	​	​	​	​
​	​	​	​	Amount of Gain (Loss)
​	​	​	​	Recognized in Statements
​	​	Location of	​	of Operations
​	​	Gain (Loss) Recognized	​	Years Ended December 31
​		in Statements of Operations		2018		2019		2020
​	​	​	​	$	​	$	​	$
Foreign exchange forward contracts		Gain (loss) on change in fair value of derivatives	​	(16,414)		(20,249)		49,807
Foreign exchange option contracts	​	Gain (loss) on change in fair value of derivatives	​	(2,023)	​	(1,022)	​	1,376
Interest rate swap		Loss on change in fair value of derivatives	​	(793)		(947)		(1,182)
​	​	Total		(19,230)		(22,218)		50,001

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- Definition

Tabular disclosure of the location and amount of derivative instruments and nonderivative instruments designated as hedging instruments reported before netting adjustments, and the amount of gain (loss) on derivative instruments and nonderivative instruments designated and qualified as hedging instruments.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4E
-URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5624181-113959

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
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- Definition

Tabular disclosure of the location and fair value amounts of derivative instruments (and nonderivative instruments that are designated and qualify as hedging instruments) reported in the statement of financial position.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
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