FAIR VALUE MEASUREMENTS (Tables)

6 Months Ended

Jun. 30, 2019

Fair Value Disclosures [Abstract]

Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis

The following tables present the fair values of the Company’s financial assets and liabilities measured at fair value on a recurring basis as of June 30, 2019 and December 31, 2018:

	As of June 30, 2019
	Balance		Level 1		Level 2		Level 3
Foreign exchange derivative assets	$	2,689	$	—	$	2,689	$	—
Total assets measured at fair value on a recurring basis	$	2,689	$	—	$	2,689	$	—
Contingent consideration	$	7,720	$	—	$	—	$	7,720
Total liabilities measured at fair value on a recurring basis	$	7,720	$	—	$	—	$	7,720

	As of December 31, 2018
	Balance		Level 1		Level 2		Level 3
Foreign exchange derivative assets	$	181	$	—	$	181	$	—
Total assets measured at fair value on a recurring basis	$	181	$	—	$	181	$	—
Foreign exchange derivative liabilities	$	3,475	$	—	$	3,475	$	—
Contingent consideration	7,468		—		—		7,468
Total liabilities measured at fair value on a recurring basis	$	10,943	$	—	$	3,475	$	7,468

Acquisition-Related Contractual Contingent Liabilities Roll Forward

A reconciliation of the beginning and ending balances of Level 3 acquisition-related contractual contingent liabilities using significant unobservable inputs for the six months ended June 30, 2019 is as follows:

	Amount
Contingent consideration liabilities as of January 1, 2019	$	7,468
Payment of contingent consideration	(1,104		)
Changes in fair value of contingent consideration included in Interest and other income, net	1,356
Contingent consideration liabilities as of June 30, 2019	$	7,720

Reported Amounts and Estimated Fair Values of the Financial Assets and Liabilities

The following tables present the estimated fair values of the Company’s financial assets and liabilities not measured at fair value on a recurring basis as of the dates indicated:

					Fair Value Hierarchy
	Balance		Estimated Fair Value		Level 1		Level 2		Level 3
June 30, 2019
Financial Assets:
Cash and cash equivalents	$	777,365	$	777,365	$	777,365	$	—	$	—
Restricted cash	$	1,184	$	1,184	$	1,184	$	—	$	—
Employee loans	$	2,884	$	2,884	$	—	$	—	$	2,884
Financial Liabilities:
Borrowings under the 2017 Credit Facility	$	25,017	$	25,017	$	—	$	25,017	$	—

					Fair Value Hierarchy
	Balance		Estimated Fair Value		Level 1		Level 2		Level 3
December 31, 2018
Financial Assets:
Cash and cash equivalents	$	770,560	$	770,560	$	770,560	$	—	$	—
Restricted cash	$	1,151	$	1,151	$	1,151	$	—	$	—
Employee loans	$	3,525	$	3,525	$	—	$	—	$	3,525
Financial Liabilities:
Borrowings under the 2017 Credit Facility	$	25,020	$	25,020	$	—	$	25,020	$	—