Fair Value Measurements

3 Months Ended

Mar. 31, 2019

FAIR VALUE MEASUREMENTS

The following tables represent the fair value hierarchy as of March 31, 2019 and December 31, 2018, for those assets and liabilities that we measure at fair value on a recurring basis (in thousands):



	Fair Value Measurements at March 31, 2019 Using:
			Quoted Prices in				Significant
			Active Markets for		Significant Other		Unobservable
			Identical Assets		Observable Inputs		Inputs
	Total		(Level 1)		(Level 2)		(Level 3)
Assets:
Cash equivalents	$	15,930	$	15,930	$	—	$	—
Corporate debt securities	109,236		—		109,236		—
U.S. treasury and government agency securities	6,357		—		6,357		—
Certificates of deposit	11,500		—		11,500		—
Commercial paper	1,500		—		1,500		—
Total assets	$	144,523	$	15,930	$	128,593	$	—
Liabilities:
Contingent consideration - MuGard	$	336	$	—	$	—	$	336
Total liabilities	$	336	$	—	$	—	$	336



	Fair Value Measurements at December 31, 2018 Using:
			Quoted Prices in				Significant
			Active Markets for		Significant Other		Unobservable
			Identical Assets		Observable Inputs		Inputs
	Total		(Level 1)		(Level 2)		(Level 3)
Assets:
Cash equivalents	$	71,568	$	71,568	$	—	$	—
Corporate debt securities	113,097		—		113,097		—
U.S. treasury and government agency securities	10,323		—		10,323		—
Certificates of deposit	13,500		—		13,500		—
Commercial paper	3,995		—		3,995		—
Total assets	$	212,483	$	71,568	$	140,915	$	—
Liabilities:
Contingent consideration - MuGard	359		—		—		359
Total liabilities	$	359	$	—	$	—	$	359

Marketable Securities

Our cash equivalents, are classified as Level 1 assets under the fair value hierarchy as these assets have been valued using quoted market prices in active markets and do not have any restrictions on redemption. Our marketable securities are classified as Level 2 assets under the fair value hierarchy as these assets are primarily determined from independent pricing services, which normally derive security prices from recently reported trades for identical or similar securities, making adjustments based upon other significant observable market transactions. At the end of each reporting period, we perform quantitative and qualitative analysis of prices received from third parties to determine whether prices are reasonable estimates of fair value. After completing our analysis, we did not adjust or override any fair value measurements provided by our pricing services as of March 31, 2019. In addition, there were no transfers or reclassifications of any securities between Level 1 and Level 2 during the three months ended March 31, 2019.

Contingent Consideration

We recorded contingent consideration related to our June 2013 license agreement for MuGard (the “MuGard License Agreement”) with Abeona Therapeutics, Inc., under which we acquired the U.S. commercial rights for the management of oral mucositis and stomatitis (the “MuGard Rights”).

The fair value measurements of contingent consideration obligations and the related intangible assets arising from business combinations are classified as Level 3 assets under the fair value hierarchy as these assets have been valued using unobservable inputs. These inputs include: (a) the estimated amount and timing of projected cash flows; (b) the probability of the achievement of the factors on which the contingency is based; and (c) the risk-adjusted discount rate used to present value the probability-weighted cash flows. Significant increases or decreases in any of those inputs in isolation could result in a significantly lower or higher fair value measurement.

The following table presents a reconciliation of contingent consideration obligations related to the acquisition of the MuGard Rights (in thousands):



Balance as of December 31, 2018	$	359
Payments made	(17		)
Adjustments to fair value of contingent consideration	(6		)
Balance as of March 31, 2019	$	336

The fair value of the contingent royalty payments payable by us to Abeona under the MuGard License Agreement was determined based on various market factors, including an analysis of estimated sales using a discount rate of approximately 15%. As of March 31, 2019, we estimated that the undiscounted royalty amounts we could pay under the MuGard License Agreement, based on current projections, may range from approximately $0.3 million to $0.6 million over the remainder of the ten year period, which commenced on June 6, 2013, the acquisition date, which is our best estimate of the period over which we expect the majority of the asset’s cash flows to be derived.

We believe the estimated fair value of the MuGard Rights are based on reasonable assumptions; however; our actual results may vary significantly from the estimated results.

Debt

We estimate the fair value of our debt obligations by using quoted market prices obtained from third-party pricing services, which are classified as Level 2 inputs. As of March 31, 2019, the estimated fair value of our 2022 Convertible Notes (as defined below) was $275.3 million, which differed from its carrying value. See Note R, “Debt” for additional information on our debt obligations.

- 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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