As of November 30, 2017, we had outstanding $172.5 million aggregate principal amount of convertible senior unsecured notes (“Notes”). The Notes are senior unsecured obligations and bear interest at a rate of 1.625% per year payable in cash on May 15 and November 15 of each year. The Notes mature on May 15, 2020 unless earlier converted or repurchased in accordance with their terms. We may not redeem the Notes prior to their stated maturity date and they will be convertible into cash, shares of our common stock or a combination of cash and shares of common stock, at our election, based on an initial conversion rate of 36.2398 shares of common stock per $1,000 principal amount. This ratio is equivalent to an initial conversion price of $27.594 per share of common stock, subject to customary adjustments. Holders may convert their Notes at their option at any time prior to November 15, 2019 upon the occurrence of certain events in the future, as defined in the indenture agreement dated May 6, 2015 (the “Indenture”). During the period from November 15, 2019 to May 13, 2020, holders may convert all or any portion of their Notes regardless of the foregoing conditions. Our intent is to settle the principal amount of the Notes in cash upon conversion. If the conversion value exceeds the principal amount, we would deliver shares of common stock in respect to the remainder of the conversion obligation in excess of the aggregate principal amount (the “conversion spread”). The shares associated with the conversion spread, if any, would be included in the denominator for the computation of diluted earnings per share, with such shares calculated using the average closing price of our common stock during each period. As of November 30, 2017, the conditions allowing holders of the Notes to convert have not been met.

If we undergo a fundamental change (as defined in the Indenture), holders of the Notes may require us to repurchase their Notes at a repurchase price of 100% of the principal amount, plus any accrued and unpaid interest, if any, up to but not including the fundamental change repurchase date. In addition, following certain corporate events that occur prior to maturity, we will increase the conversion rate for a holder who elects to convert its Notes in connection with such a corporate event in certain circumstances. In such event, an aggregate of up to 2.5 million additional shares of common stock could be issued upon conversions in connection with such corporate events, subject to adjustment in the same manner as the conversion rate.

	November 30,			February 28,
	2017			2017
Principal	$	172,500		$	172,500
Less: Unamortized debt discount		(17,846	)		(22,770	)
Unamortized debt issuance costs		(2,276	)		(2,903	)
Net carrying amount of the Notes	$	152,378		$	146,827

The Notes are carried at their principal amount, net of unamortized debt discount and issuance costs, and are not adjusted to fair value each period. The issuance date fair value of the liability component of the Notes in the amount of $138.9 million was determined using a discounted cash flow analysis, in which the projected interest and principal payments were discounted back to the issuance date at a market interest rate for nonconvertible debt of 6.2%, which represents a Level 3 fair value measurement. The debt discount of $33.6 million is being amortized to interest expense using the effective interest method with an effective interest rate of 6.2% over the period from the issuance date through the contractual maturity date of May 15, 2020. The approximate fair value of the Notes as of November 30, 2017 was $185.4 million, which was estimated on the basis of inputs that are observable in the market and which is considered a Level 2 measurement method in the fair value hierarchy.