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Convertible Senior Notes (Tables)
6 Months Ended
Jun. 30, 2022
Convertible Senior Notes [Abstract]  
Schedule of Net Carrying Amount

June 30,

December 31,

(in thousands)

2022

2021

Principal amount

$

900,000

$

900,000

Unamortized debt issuance costs

(3,626)

(3,933)

Net carrying amount

$

896,374

$

896,067

Schedule of Interest Expense

Three Months Ended June 30,

Six Months Ended June 30,

(in thousands)

2022

2021

2022

2021

Contractual interest expense

$

3,375

$

3,375

$

6,750

$

5,063

Amortization of debt issuance costs

154

151

307

227

Total interest expense

$

3,529

$

3,526

$

7,057

$

5,290