Fair Value Measurements

Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants in the principal market or, if none exists, the most advantageous market, for the specific asset or liability at the measurement date (referred to as the “exit price”). The fair value should be based on assumptions that market participants would use, including a consideration of nonperformance risk.

We assess the inputs used to measure fair value using the three-tier hierarchy. The hierarchy indicates the extent to which inputs used in measuring fair value are observable in the market.


Level 1	Inputs include unadjusted quoted prices in active markets for identical assets or liabilities that we can access at the measurement date.


Level 2	Inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly, including quoted prices for similar assets in active markets, quoted prices from identical or similar assets in inactive markets and observable inputs such as interest rates and yield curves.


Level 3	Inputs that are significant to the measurement that are not observable in the market and include management's judgments about the assumptions market participants would use in pricing the asset or liability (including assumptions about risk).

Our fair value processes include controls that are designed to ensure that fair values are appropriate. Such controls include model validation, review of key model inputs, analysis of period-over-period fluctuations and reviews by senior management.

Valuation Methodologies

Money Market Securities. Money market securities are cash equivalents, which are included in cash and cash equivalents, restricted cash from collections on auto loan receivables and other assets. They consist of highly liquid investments with original maturities of three months or less and are classified as Level 1.

Mutual Fund Investments. Mutual fund investments consist of publicly traded mutual funds that primarily include diversified equity investments in large-, mid- and small-cap domestic and international companies or investment grade debt securities. The investments, which are included in other assets, are held in a rabbi trust established to fund informally our executive deferred compensation plan and are classified as Level 1.

Derivative Instruments. The fair values of our derivative instruments are included in either other current assets, other assets, accounts payable or other liabilities. Our derivatives are not exchange-traded and are over-the-counter customized derivative instruments. All of our derivative exposures are with highly rated bank counterparties.

We measure derivative fair values assuming that the unit of account is an individual derivative instrument and that derivatives are sold or transferred on a stand-alone basis. We estimate the fair value of our derivatives using quotes determined by the derivative counterparties and third-party valuation services. Quotes from third-party valuation services and quotes received from bank counterparties project future cash flows and discount the future amounts to a present value using market-based expectations for interest rates and the contractual terms of the derivative instruments. The models do not require significant judgment and model inputs can typically be observed in a liquid market; however, because the models include inputs other than quoted prices in active markets, all derivatives are classified as Level 2.

Our derivative fair value measurements consider assumptions about counterparty and our own nonperformance risk. We monitor counterparty and our own nonperformance risk and, in the event that we determine that a party is unlikely to perform under terms of the contract, we would adjust the derivative fair value to reflect the nonperformance risk.

Items Measured at Fair Value on a Recurring Basis



	As of May 31, 2019
(In thousands)	Level 1			Level 2			Total
Assets:
Money market securities	$	415,713		$	—		$	415,713
Mutual fund investments	21,329			—			21,329
Derivative instruments	—			593			593
Total assets at fair value	$	437,042		$	593		$	437,635

Percent of total assets at fair value	99.9		%	0.1		%	100.0		%
Percent of total assets	2.2		%	—		%	2.2		%

Liabilities:
Derivative instruments	$	—		$	(13,213	)	$	(13,213	)
Total liabilities at fair value	$	—		$	(13,213	)	$	(13,213	)

Percent of total liabilities	—		%	0.1		%	0.1		%



	As of February 28, 2019
(In thousands)	Level 1			Level 2			Total
Assets:
Money market securities	$	372,448		$	—		$	372,448
Mutual fund investments	19,263			—			19,263
Derivative instruments	—			1,844			1,844
Total assets at fair value	$	391,711		$	1,844		$	393,555

Percent of total assets at fair value	99.5		%	0.5		%	100.0		%
Percent of total assets	2.1		%	—		%	2.1		%

Liabilities:
Derivative instruments	$	—		$	(6,120	)	$	(6,120	)
Total liabilities at fair value	$	—		$	(6,120	)	$	(6,120	)

Percent of total liabilities	—		%	—		%	—		%

There were no transfers between Levels 1 and 2 for the three months ended May 31, 2019. As of May 31, 2019 and February 28, 2019, we had no Level 3 assets.

Fair Value of Financial Instruments

The carrying value of our cash and cash equivalents, accounts receivable, other restricted cash deposits and accounts payable approximates fair value due to the short-term nature and/or variable rates associated with these financial instruments. Auto loan receivables are presented net of an allowance for estimated loan losses. We believe that the carrying value of our revolving credit facility and term loan approximates fair value due to the variable rates associated with these obligations. The fair value of our senior unsecured notes, which are not carried at fair value on our consolidated balance sheets, was determined using Level 2 inputs based on quoted market prices. The carrying value and fair value of the senior unsecured notes as of May 31, 2019 and February 28, 2019, respectively, are as follows:



(In thousands)	As of May 31, 2019		As of February 28, 2019
Carrying value	$	500,000	$	500,000
Fair value	$	513,199	$	488,590