Indebtedness (Tables)

12 Months Ended

Dec. 31, 2021

Carrying Value of Senior Convertible Notes

The carrying values of the Company’s Senior Convertible Notes are as follows:

(in thousands)	December 31, 2021			December 31, 2020
2.25% Senior Convertible Notes due 2021:
Principal amount	$	—		$	650,000
Unamortized debt discount		—			(3,945	)
Unamortized debt issuance costs		—			(752	)
		—			645,303
1.00% Senior Convertible Notes due 2023:
Principal amount		450,000			450,000
Unamortized debt discount		—			(46,837	)
Unamortized debt issuance costs		(6,543	)		(11,049	)
		443,457			392,114
0.375% Senior Convertible Notes due 2025:
Principal amount		450,000			450,000
Unamortized debt discount		—			(66,346	)
Unamortized debt issuance costs		(8,473	)		(9,542	)
		441,527			374,112
Total Senior Convertible Notes	$	884,984		$	1,411,529

Less: Current portion		—			(645,303	)
Long-term Senior Convertible Notes	$	884,984		$	766,226

- Definition

Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

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+ Details