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Debt (Tables)
 3 Months Ended
Mar. 31, 2023
Debt Disclosure [Abstract]  
Long-term Debt Long-term debt consists of the following (in thousands):
March 31, 2023December 31, 2022
4.625% Senior Notes
$460,038 $460,038 
1.75% Convertible Notes
550,000 550,000 
Total Notes1,010,038 1,010,038 
Credit Agreement— — 
Less: Unamortized discount(2,690)(2,764)
Deferred issuance costs(7,731)(8,221)
Total long-term debt$999,617 $999,053 
Schedule of Repurchase Agreements
Repurchases of 4.625% Senior Notes on the open market were as follows (in thousands):
Three months ended March 31, 2022
Principal repurchased$54,609 
Aggregate purchase price$55,365 
Gain (loss) on repurchase (1)
$(1,220)
(1)Presented within ‘Gain (loss) on debt extinguishment, net” on the Condensed Consolidated Statements of Operations.
Schedule of Debt
The following table provides additional information related to the 1.75% Convertible Notes (in thousands):
March 31, 2023December 31, 2022
Principal amount of 1.75% Convertible Notes
$550,000 $550,000 
Less: Carrying amount of debt issuance costs(6,881)(7,347)
Net carrying amount of 1.75% Convertible Notes
$543,119 $542,653 
The following table provides the components of interest expense related to the 1.75% Convertible Notes (in thousands):
Three months ended March 31,
20232022
Coupon interest expense$2,406 $2,406 
Amortization of debt issuance costs466 493 
Total interest expense related to 1.75% Convertible Notes
$2,872 $2,899