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Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2025

Fair Value Disclosures [Abstract]

Schedule of Fair Value by Significant Investment Category

The following table summarizes the Company’s cash and available-for-sale securities’ amortized cost, unrealized gains (losses), and fair value by significant investment category reported as cash and cash equivalents, restricted cash short-term, restricted cash, or available-for-sale securities as of March 31, 2025 and December 31, 2024.

(in thousands)																														Reported as:
March 31, 2025						Amortized Cost						Unrealized Gain						Unrealized (Loss)						Fair Value						Cash & Cash Equivalents						Available-for-sale Securities												Restricted Cash (Current and Non-Current)
Cash						$	36,224					$	—					$	—					$	36,224					$	29,601					$	—											$	6,623
Level I:
Money market funds						149,453						—						—						149,453						149,453						—												—
Level II:
Corporate bonds						516,106						1,338						(140)						517,304						4,992						512,312												—
U.S. treasury securities						1,119,056						2,510						(232)						1,121,334						14,922						1,106,412												—
U.S. government agency securities						62,438						24						(19)						62,443						—						62,443												—
Commercial paper						34,739						—						—						34,739						5,491						29,248												—
Subtotal						1,732,339						3,872						(391)						1,735,820						25,405						1,710,415												—
Total assets measured at fair value on a recurring basis						$	1,918,016					$	3,872					$	(391)					$	1,921,497					$	204,459					$	1,710,415											$	6,623

(in thousands)																														Reported as:
December 31, 2024						Amortized Cost						Unrealized Gain						Unrealized (Loss)						Fair Value						Cash & Cash Equivalents						Available-for-sale Securities												Restricted Cash (Current and Non-Current)
Cash						$	51,410					$	—					$	—					$	51,410					$	44,887					$	—											$	6,523
Level I:
Money market funds						102,804						—						—						102,804						102,804						—												—
Level II:
Corporate bonds						466,769						1,125						(316)						467,578						—						467,578												—
U.S. treasury securities						1,120,478						2,403						(677)						1,122,204						—						1,122,204												—
U.S. government agency securities						69,872						55						(19)						69,908						—						69,908												—
Commercial paper						48,538						—						—						48,538						—						48,538												—
Subtotal						1,705,657						3,583						(1,012)						1,708,228						—						1,708,228												—
Total assets measured at fair value on a recurring basis						$	1,859,871					$	3,583					$	(1,012)					$	1,862,442					$	147,691					$	1,708,228											$	6,523

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- Definition

Tabular disclosure of assets, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class 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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X

- References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
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