Long-term Debt

Revolving Line of Credit

As of March 31, 2019, the Company had a $500 million secured revolving line of credit under which the Company can borrow, repay and reborrow loans from time to time prior to its scheduled maturity date of January 9, 2022.

The Company classifies balances outstanding under its line of credit as long-term debt in the consolidated balance sheets. At March 31, 2019, the Company had $0 outstanding under the line of credit, $500 million in available commitments under the revolving line of credit and $309 million available for borrowing under the revolving line of credit in compliance with applicable financial covenants. For the three and nine months ended March 31, 2019, the average interest rate was 0.00% and 2.64%, respectively. For the three and nine months ended March 31, 2019 the average commitment fee percentage was 0.06% and 0.17%, respectively. The Company was in compliance with all covenants under the revolving line of credit at March 31, 2019.

Convertible Notes

On August 24, 2018, the Company sold $500 million aggregate principal amount of 0.875% convertible senior notes due September 1, 2023 to qualified institutional buyers pursuant to Rule 144A under the Securities Act of 1933, as amended, and an additional $75.0 million aggregate principal amount of such notes pursuant to the exercise in full of the over-allotment options of the underwriters (the Notes). The total net proceeds from the debt offering was approximately $562 million.

The conversion rate will initially be 16.67 shares of common stock per $1.0 thousand principal amount of Notes (equivalent to an initial conversion price of approximately $59.97 per share of common stock). The conversion rate will be subject to adjustment for some events, but will not be adjusted for any accrued and unpaid interest. In addition, following certain corporate events that occur prior to the maturity date, or following the Company's issuance of a notice of redemption, the Company will increase the conversion rate for a holder who elects to convert its Notes in connection with such a corporate event, or who elects to convert any Notes called for redemption during the related redemption period in certain circumstances. The Company may not redeem the Notes prior to September 1, 2021. The Company may redeem for cash all or any portion of the Notes, at its option, on a redemption date occurring on or after September 1, 2021 and on or before the 40th scheduled trading day immediately before the maturity date, if the last reported sale price of its common stock has been at least 130% of the conversion price then in effect for at least 20 trading days (whether or not consecutive), including the trading day immediately preceding the date on which the Company provides a notice of redemption, during any 30 consecutive trading day period ending on, and including, the trading day immediately preceding the date on which the Company provides notice of redemption. The redemption price will be 100% of the principal amount of the Notes to be redeemed, plus accrued and unpaid interest to, but excluding, the redemption date. If the Company undergoes certain fundamental changes relating to the Company's common stock, holders may require the Company to repurchase for cash all or any portion of their Notes at a fundamental change repurchase price equal to 100% of the principal amount of the Notes to be repurchased, plus accrued and unpaid interest to, but excluding, the fundamental change repurchase date.

Holders may convert their Notes at their option at any time prior to the close of business on the business day immediately preceding March 1, 2023 only under the following circumstances: (1) during any calendar quarter commencing after the calendar quarter ending on December 31, 2018 (and only during such calendar quarter), if the last reported sale price of the common stock for at least 20 trading days (whether or not consecutive) during a period of 30 consecutive trading days ending on, and including, the last trading day of the immediately preceding calendar quarter is greater than or equal to 130% of the conversion price on each applicable trading day; (2) during the five business day period after any ten consecutive trading day period in which the trading price per $1.0 thousand principal amount of Notes for each trading day of the measurement period was less than 98% of the product of the last reported sale price of its common stock and the conversion rate on each such trading day; (3) if the Company calls such Notes for redemption, at any time prior to the close of business on the second business day immediately preceding the redemption date; or (4) upon the occurrence of specified corporate events. On or after March 1, 2023 until the close of business on the second scheduled trading day immediately preceding the maturity date, holders may convert their Notes at any time, regardless of the foregoing circumstances. Upon conversion, the Company will pay or deliver cash, shares of its common stock or a combination of cash and shares of its common stock, at the Company's election.

In accounting for the issuance of the convertible senior notes, the Company separated the Notes into liability and equity components. The carrying amount of the liability component was calculated by measuring the fair value of a similar debt instrument that does not have an associated convertible feature. The carrying amount of the equity component representing the conversion option was $110.6 million and was determined by deducting the fair value of the liability component from the par value of the Notes. The equity component is not remeasured as long as it continues to meet the conditions for equity classification. The excess of the principal amount of the liability component over its carrying amount (“debt discount”), along with related issuance fees are amortized to interest expense over the term of the 2023 Notes at an effective interest rate of 0.49%.

The net carrying amount of the liability component of the Notes is as follows (in thousands):



	March 31, 2019			June 24, 2018
Principal		$575,000			$—
Unamortized discount and issuance costs	(111,509		)	—
Net carrying amount		$463,491			$—

The net carrying amount of the equity component of the Notes is as follows (in thousands):



	March 31, 2019			June 24, 2018
Discount related to value of conversion option		$113,271			$—
Debt issuance costs	(2,680		)	—
Net carrying amount		$110,591			$—

The following table sets forth the interest expense recognized related to the Notes (in thousands):



	Three Months Ended				Nine Months Ended
	March 31, 2019		March 25, 2018		March 31, 2019		March 25, 2018
Interest expense		$1,258		$—		$2,935		$—
Amortization of discount and issuance costs	5,490		—		12,687		—
Total interest expense		$6,748		$—		$15,622		$—