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FAIR VALUE MEASUREMENTS (Tables)

9 Months Ended

Sep. 30, 2024

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis

The carrying amounts and estimated fair values by input level of the Company’s financial instruments were as follows:

			September 30, 2024
(in thousands)			Carrying Amount						Fair Value						Level 1						Level 2						Level 3
Financial assets:
Cash and cash equivalents			$	284,434					$	284,434					$	284,434					$	—					$	—
Short-term investments			$	582,056					$	582,056					$	582,056					$	—					$	—
Restricted cash			$	1,160					$	1,160					$	1,160					$	—					$	—
Financial liabilities:
2026 Notes			$	208,362					$	192,938					$	192,938					$	—					$	—
2030 Notes			$	729,272					$	823,812					$	823,812					$	—					$	—
Equipment notes			$	3,147					$	3,114					$	—					$	3,114					$	—

			December 31, 2023
(in thousands)			Carrying Amount						Fair Value						Level 1						Level 2						Level 3
Financial assets:
Cash and cash equivalents			$	263,351					$	263,351					$	263,351					$	—					$	—
Short-term investments			$	734,493					$	734,493					$	734,493					$	—					$	—
Restricted cash			$	1,637					$	1,637					$	1,637					$	—					$	—
Financial liabilities:
2026 Notes			$	681,980					$	619,496					$	619,496					$	—					$	—
Equipment notes			$	4,743					$	4,628					$	—					$	4,628					$	—

Fair Value Disclosure of Asset and Liability Not Measured at Fair Value

The carrying amounts and estimated fair values by input level of the Company’s financial instruments were as follows:

			September 30, 2024
(in thousands)			Carrying Amount						Fair Value						Level 1						Level 2						Level 3
Financial assets:
Cash and cash equivalents			$	284,434					$	284,434					$	284,434					$	—					$	—
Short-term investments			$	582,056					$	582,056					$	582,056					$	—					$	—
Restricted cash			$	1,160					$	1,160					$	1,160					$	—					$	—
Financial liabilities:
2026 Notes			$	208,362					$	192,938					$	192,938					$	—					$	—
2030 Notes			$	729,272					$	823,812					$	823,812					$	—					$	—
Equipment notes			$	3,147					$	3,114					$	—					$	3,114					$	—

			December 31, 2023
(in thousands)			Carrying Amount						Fair Value						Level 1						Level 2						Level 3
Financial assets:
Cash and cash equivalents			$	263,351					$	263,351					$	263,351					$	—					$	—
Short-term investments			$	734,493					$	734,493					$	734,493					$	—					$	—
Restricted cash			$	1,637					$	1,637					$	1,637					$	—					$	—
Financial liabilities:
2026 Notes			$	681,980					$	619,496					$	619,496					$	—					$	—
Equipment notes			$	4,743					$	4,628					$	—					$	4,628					$	—

X

- Definition

Tabular disclosure of information about fair value of asset and liability not measured at fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2E
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2E

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X

- References

No definition available.

+ Details

Name:	us-gaap_FairValueDisclosuresAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
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X

- Definition

Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

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