FAIR VALUE MEASUREMENTS (Tables)

12 Months Ended

Dec. 31, 2018

Fair Value Disclosures [Abstract]

Fair Value of Assets and Liabilities Measured on Recurring Basis

The following table sets forth, by level within the fair value hierarchy, our financial assets and liabilities that are accounted for at fair value on a recurring basis as of December 31, 2018 and 2017. As required by ASC 820, financial assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement (in thousands):

	December 31, 2018
	Quoted Prices in Active Markets for Identical Items  (Level 1)		Significant  Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)		Total
Liabilities:
Contingent consideration1	$	—	$	—		$	429	$	429
Net investment hedge	$	—	$	(3,904	)	$	—	$	(3,904	)
Embedded derivative in convertible debt2	$	—	$	—		$	—	$	—

	December 31, 2017
	Quoted Prices in Active Markets for Identical Items  (Level 1)		Significant  Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)		Total
Liabilities:
Contingent consideration1	$	—	$	—		$	1,712	$	1,712
Net investment hedge	$	—	$	(3,246	)	$	—	$	(3,246	)
Embedded derivative in convertible debt2	$	—	$	20,594		$	—	$	20,594

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1 Inclusive of both current and noncurrent portions.

2 The embedded derivative liability was reclassified to stockholders’ equity as of May 17, 2018 and is no longer marked to fair value each period, as discussed in Note 10.

Summary of Changes in Fair Value of Level 3 Contingent Consideration

The following table represents the changes in the fair value of Level 3 contingent consideration (in thousands):

	Twelve Months Ended December 31,
	2018			2017
Beginning balance	$	1,712		$	3,739
Accretion of liability	39			222
Foreign currency effects	(14		)	203
Payment	(1,106		)	(1,278		)
Revaluation	(202		)	(1,174		)
Ending balance	$	429		$	1,712