FAIR VALUE MEASUREMENTS (Tables)

6 Months Ended

Jun. 30, 2020

Fair Value Disclosures [Abstract]

Schedule of fair value on a recurring basis

The following table presents the Company’s assets and liabilities, measured and recognized at fair value on a recurring basis, classified under the appropriate level of the fair value hierarchy as of June 30, 2020 (in thousands):

	As of June 30, 2020
	Total carrying and estimated fair value		Quoted prices in active markets (Level 1)		Significant other observable inputs (Level 2)		Significant unobservable inputs (Level 3)
Assets:
Cash and Cash Equivalents	$	237,170	$	237,170	$	—	$	—
Debt securities, available-for-sale	220,206		—		220,206		—
Total	$	457,376	$	237,170	$	220,206	$	—
Liabilities:
Business combination-related contingent consideration	$	68,600	$	—	$	—	$	68,600
Total	$	68,600	$	—	$	—	$	68,600

The following table presents the Company’s assets and liabilities, measured and recognized at fair value on a recurring basis, classified under the appropriate level of the fair value hierarchy as of December 31, 2019 (in thousands):

	As of December 31, 2019
	Total carrying and estimated fair value		Quoted prices in active markets (Level 1)		Significant other observable inputs (Level 2)		Significant unobservable inputs (Level 3)
Assets:
Cash and Cash Equivalents	$	62,436	$	62,436	$	—	$	—
Debt securities, available-for-sale	336,088		—		336,088		—
Total	$	398,524	$	62,436	$	336,088	$	—
Liabilities:
Business combination-related contingent consideration	70,900		—		—		70,900
Total	$	70,900	$	—	$	—	$	70,900

Schedule of summary of changes in estimated acquisition related contingent consideration

The following table sets forth a summary of changes in the estimated fair value of the Company's business combination-related contingent consideration for the six months ended June 30, 2020 (in thousands):

	Fair Value Measurements of Acquisition-Related Contingent Consideration (Level 3)
Balance at January 1, 2020	$	70,900
Changes in the fair value of contingent consideration	2,363
Contractual payments	$	(2,125)
Contractual payments included in accrued liabilities at June 30, 2020	(2,424)
Foreign currency impact	(114)
Balance at June 30, 2020	$	68,600