Fair Value Measurements

12 Months Ended

Dec. 31, 2015

FAIR VALUE MEASUREMENTS

The applicable accounting guidance establishes a framework for measuring fair value and requires disclosure about the fair value measurements of assets and liabilities. This guidance requires the Company to classify and disclose assets and liabilities measured at fair value on a recurring basis, as well as fair value measurements of assets and liabilities measured on a nonrecurring basis in periods subsequent to initial measurement, in a three-tier fair value hierarchy as described below.

The guidance defines fair value as the exchange price that would be received for an asset or paid to transfer a liability, in the principal or most advantageous market for the asset or liability, in an orderly transaction between market participants on the measurement date.

Valuation techniques used to measure fair value must maximize the use of observable inputs and minimize the use of unobservable inputs. The guidance describes three levels of inputs that may be used to measure fair value:


•	Level 1 — Observable inputs that reflect quoted prices for identical assets or liabilities in active markets.

•

Level 2 — Observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities, quoted prices in markets that are not active, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. The Company primarily uses broker quotes for valuation of its short-term investments. The forward exchange contracts are classified as Level 2 because they are valued using quoted market prices and other observable data for similar instruments in an active market.


•	Level 3 — Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities.

The Company uses the market approach to measure fair value for its financial assets and liabilities. The market approach uses prices and other relevant information generated by market transactions involving identical or comparable assets or liabilities. The fair value of the Company’s convertible notes is influenced by interest rates, the Company’s stock price and stock price volatility. The estimated fair value of the Company’s convertible notes based on a market approach was approximately $123.1 million as of December 31, 2015, and represents a Level 2 valuation. (See Note 12, “Convertible Notes and Credit Facilities-4.0% Convertible Senior Notes” for additional information on the convertible notes.)

During the years ended December 31, 2015, 2014 and 2013 there were no nonrecurring fair value measurements of assets and liabilities subsequent to initial recognition.

The following table sets forth the fair value of the Company’s financial assets and liabilities measured at fair value based on the three-tier fair value hierarchy (in thousands):



	Level 1		Level 2		Level 3		Total
As of December 31, 2015
Cash equivalents
Money market funds	$	53,434	$	—	$	—	$	53,434
U.S. Treasury bills	24,998		—		—		24,998
Short-term investments
Corporate bonds	—		25,505		—		25,505
Commercial paper	—		1,099		—		1,099
Prepaids and other current assets
Time deposit pledged for credit card facility			580				580
Derivative assets	—		113		—		113
Other assets
Long-term investment	1,840		—		—		1,840
Total assets measured and recorded at fair value	$	80,272	$	27,297	$	—	$	107,569
Accrued liabilities
Derivative liabilities	$	—	$	371	$	—	$	371
Total liabilities measured and recorded at fair value	$	—	$	371	$	—	$	371



	Level 1		Level 2		Level 3		Total
As of December 31, 2014
Cash equivalents
Money market funds	$	23,121	$	—	$	—	$	23,121
Short-term investments
State, municipal and local government agencies bonds	—		13,961		—		13,961
Corporate bonds	—		17,886		—		17,886
Prepaids and other current assets
Derivative assets	—		341		—		341
Other assets
Long-term investment	2,606		—		—		2,606
Total assets measured and recorded at fair value	$	25,727	$	32,188	$	—	$	57,915
Accrued liabilities
Derivative liabilities	$	—	$	7	$	—	$	7
Total liabilities measured and recorded at fair value	$	—	$	7	$	—	$	7

- 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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