FINANCIAL INSTRUMENTS

12 Months Ended

Dec. 31, 2018

Marketable Debt Securities

At December 31, 2018, current available-for-sale marketable debt securities are as follows:



	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(In thousands)
Treasury discount notes	$	24,947	$	1	$	(1	)	$	24,947
Total available-for-sale marketable debt securities	$	24,947	$	1	$	(1	)	$	24,947

The Company did not hold any available-for-sale marketable debt securities prior to the third quarter of 2018.

The contractual maturities of debt securities classified as current available-for-sale at December 31, 2018 are within one year. There are no investments in available-for-sale marketable debt securities that have been in a continuous unrealized loss position for longer than twelve months as of December 31, 2018.

For the year ended December 31, 2018, proceeds from maturities of available-for-sale marketable debt securities were $35.0 million. There were no gross realized gains or losses from the maturities of available-for-sale marketable debt securities for the year ended December 31, 2018.

Fair Value Measurements

The following tables present the Company’s financial instruments that are measured at fair value on a recurring basis:



	December 31, 2018
	Quoted Market Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total Fair Value Measurements
	(In thousands)
Assets:
Cash equivalents:
Money market funds	$	137,359	$	—	$	—	$	137,359
Treasury discount notes	—		99,914		—		99,914
Commercial paper	—		52,931		—		52,931
Time deposits	—		15,000		—		15,000
Marketable debt securities:
Treasury discount notes	—		24,947		—		24,947
Total	$	137,359	$	192,792	$	—	$	330,151



	December 31, 2017
	Quoted Market Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total Fair Value Measurements
	(In thousands)
Assets:
Cash equivalents:
Money market funds	$	189,207	$	—	$	—	$	189,207
Treasury discount notes	—		500		—		500
Certificate of deposit	—		6,195		—		6,195
Total	$	189,207	$	6,695	$	—	$	195,902

Financial instruments measured at fair value only for disclosure purposes

The following table presents the carrying value and the fair value of financial instruments measured at fair value only for disclosure purposes:



	December 31, 2018						December 31, 2017
	Carrying value			Fair value			Carrying value			Fair value
	(In thousands)
Current portion of long-term debt	$	(13,750	)	$	(12,753	)	$	(13,750	)	$	(13,802	)
Long-term debt, net ^(a)	(244,971		)	(229,556		)	(258,312		)	(262,230		)
Current portion of long-term debt—related party	—			—			(816		)	(837		)
Long-term debt—related party, net	(1,015		)	(1,092		)	(1,997		)	(2,048		)

_________________


^(a)	At December 31, 2018 and 2017, the carrying value of long-term debt, net includes unamortized debt issuance costs of $2.5 million and $2.9 million, respectively.

The fair value of long-term debt, including the current portion, is estimated using observable market prices or indices for similar liabilities, which are Level 2 inputs. The fair value of long-term debt—related party, including the current portion, is based on Level 3 inputs and is estimated by discounting the future cash flows based on current market conditions.

- 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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