Debt

6 Months Ended

Jun. 30, 2022

Debt Disclosure [Abstract]

Debt

Debt

2028 Convertible Senior Notes

On January 11, 2021, the Company completed the sale of $345.0 million of Convertible Senior Notes with a stated interest rate of 0.25% and a maturity date of January 15, 2028 (the “2028 Convertible Notes”), unless earlier converted, redeemed, or repurchased.

The last reported sales price of the Company’s common stock was not greater than or equal to 130.0% of the conversion price of the 2028 Convertible Notes on at least 20 of the last 30 consecutive trading days of the quarter ended March 31, 2022. Based on the terms of the 2028 Convertible Notes, the holders could not have converted all or a portion of their 2028 Convertible Notes in the second quarter of 2022. The last reported sales price of the Company’s common stock was not greater than or equal to 130.0% of the conversion price of the 2028 Convertible Notes on at least 20 of the last 30 consecutive trading days of the quarter ended June 30, 2022. Based on the terms of the 2028 Convertible Notes, the holders cannot convert all or a portion of their 2028 Convertible Notes in the third quarter of 2022. The value of the 2028 Convertible Notes, if-converted, does not exceed the principal amount based on a closing stock price of $8.15 on June 30, 2022.

The interest expense recognized on the 2028 Convertible Notes includes $0.2 million, $0.4 million and $8,400 for the contractual coupon interest, the amortization of the debt discount and the amortization of the debt issuance costs, respectively, for the three months ended June 30, 2022. The interest expense recognized on the 2028 Convertible Notes includes $0.4 million, $0.7 million and $16,800 for the contractual coupon interest, the amortization of the debt discount and the amortization of the debt issuance costs, respectively, for the six months ended June 30, 2022. The interest expense recognized on the 2028 Convertible Notes includes $0.2 million, $0.3 million and $8,400 for the contractual coupon interest, the amortization of the debt discount and the amortization of the debt issuance costs, respectively, for the three months ended June 30, 2021. The interest expense recognized on the 2028 Convertible Notes includes $0.4 million, $0.7 million and $15,100 for the contractual coupon interest, the amortization of the debt discount and the amortization of the debt issuance costs, respectively, for the six months ended June 30, 2021. The effective interest rate on the 2028 Convertible Notes is 0.70%, which includes the interest on the 2028 Convertible Notes and amortization of the debt discount and debt issuance costs. The 2028 Convertible Notes bear interest at a rate of 0.25% per annum, payable semi-annually in arrears on January 15 and July 15 of each year, beginning on July 15, 2021.

At June 30, 2022, the estimated fair values (Level 2) of the 0.25% Convertible Senior Notes due 2028 was $213.9 million. At December 31, 2021, the estimated fair value (Level 2) of the 0.25% Convertible Senior Notes due 2028 was $297.6 million.

2025 Convertible Senior Notes

On May 4, 2020, the Company completed the sale of $201.3 million of Convertible Senior Notes with a stated interest rate of 1.25% and a maturity date of May 1, 2025 (the “2025 Convertible Notes”), unless earlier converted, redeemed, or repurchased.

The last reported sales price of the Company’s common stock was not greater than or equal to 130.0% of the conversion price of the 2025 Convertible Notes on at least 20 of the last 30 consecutive trading days of the quarter ended March 31, 2022. Based on the terms of the 2025 Convertible Notes, the holders could not have converted all or a portion of their 2025 Convertible Notes in the first quarter of 2022. The last reported sales price of the Company’s common stock was not greater than or equal to 130.0% of the conversion price of the 2025 Convertible Notes on at least 20 of the last 30 consecutive trading days of the quarter ended June 30, 2022. Based on the terms of the 2025 Convertible Notes, the holders cannot convert all or a portion of their 2025 Convertible Notes in the third quarter of 2022. The value of the 2025 Convertible Notes, if-converted, does not exceed the principal amount based on a closing stock price of $8.15 on June 30, 2022.

The interest expense recognized on the 2025 Convertible Notes includes $0.6 million, $0.3 million and $37,000 for the contractual coupon interest, the amortization of the debt discount and the amortization of the debt issuance costs, respectively, for the three months ended June 30, 2022. The interest expense recognized on the 2025 Convertible Notes includes $1.2 million, $0.6 million and $74,000 for the contractual coupon interest, the amortization of the debt discount and the amortization of the debt issuance costs, respectively, for the six months ended June 30, 2022. The interest expense recognized on the 2025 Convertible Notes includes $0.7 million, $0.3 million and $30,000 for the contractual coupon interest, the amortization of the debt discount and the amortization of the debt issuance costs, respectively, for the three months ended June 30, 2021. The interest expense recognized on the 2025 Convertible Notes includes $1.3 million, $0.6 million and $70,000 for the contractual coupon interest, the amortization of the debt discount and the amortization of the debt issuance costs, respectively, for the six months ended June 30, 2021. The effective interest rate on the 2025 Convertible Notes is 1.96%, which includes the interest on the 2025 Convertible Notes and amortization of the debt discount and debt issuance costs. The 2025 Convertible Notes bear interest at a rate of 1.25% per annum, payable semi-annually in arrears on May 1 and November 1 of each year, which began on November 1, 2020.

At June 30, 2022, the estimated fair values (Level 2) of the 1.25% Convertible Senior Notes due 2025 was $168.6 million. At December 31, 2021, the estimated fair value (Level 2) of the 1.25% Convertible Senior Notes due 2025 was $238.9 million.