FAIR VALUE MEASUREMENTS

6 Months Ended

Jun. 30, 2019

FAIR VALUE MEASUREMENTS:

Fair value hierarchy:

The Company measures its cash equivalents and marketable securities at fair value. The Company’s cash equivalents are classified within Level 1. Cash equivalents are valued primarily using quoted market prices utilizing market observable inputs. The Company's investments in debt securities and certificates of deposits are classified within Level 2 as the market inputs to value these instruments consist of market yields, reported trades and broker/dealer quotes. In addition, foreign currency contracts are classified within Level 2 as the valuation inputs are based on quoted prices and market observable data of similar instruments. The Level 3 valuation inputs include the Company's best estimate of what market participants would use in pricing the asset or liability at the measurement date. The inputs are unobservable in the market and significant to the instrument's valuation. As of June 30, 2019 and December 31, 2018, the Company did not have any assets or liabilities valued based on Level 3 valuations.

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

The following table represents the fair value hierarchy of the Company's financial assets and liabilities measured at fair value on a recurring basis as of June 30, 2019:



	Level 1		Level 2		Total
	(in thousands)
Money market funds	$	4,048	$	—	$	4,048
Certificates of deposit	—		149,108		149,108
Government debt securities	—		150,144		150,144
Corporate debt securities	—		257,554		257,554
	4,048		556,806		560,854
Derivative contracts	—		706		706
Total financial assets	$	4,048	$	557,512	$	561,560
Derivative contracts	—		22		22
Total financial liabilities	$	—	$	22	$	22

The following table represents the fair value hierarchy of the Company's financial assets and liabilities measured at fair value on a recurring basis as of December 31, 2018:



	Level 1		Level 2		Total
	(in thousands)
Money market funds	$	1,265			$	1,265
Certificates of deposit			95,038		95,038
Government debt securities			100,478		100,478
Corporate debt securities			186,208		186,208
	1,265		381,724		382,989
Long-term restricted cash	—		7,884		7,884
Derivative contracts	—		96		96
Total financial assets	$	1,265	$	389,704	$	390,969
Derivative contracts	—		2,536		2,536
Total financial liabilities	$	—	$	2,536	$	2,536

There were no transfers between Level 1 and Level 2 securities during the six months ended June 30, 2019 and 2018.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

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