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Cash and Investments in Marketable Securities (Tables)

9 Months Ended

Sep. 30, 2021

Fair Value Disclosures [Abstract]

Cash and Investments in Marketable Securities, Including Cash Equivalents

Cash and investments in marketable securities, including cash equivalents, are as follows (in thousands):

			Estimated Fair Value at
			September 30, 2021						December 31, 2020
Cash and cash equivalents			$	54,017					$	198,955
Short-term investments			867,063						862,941
Long-term investments			34,219						136,662
Total cash and investments in marketable securities			$	955,299					$	1,198,558

Portfolio of Cash and Investments in Marketable Securities

Our portfolio of cash and investments in marketable securities includes (in thousands):

						September 30, 2021																								December 31, 2020
						Amortized Cost						Gross Unrealized Gains						Gross Unrealized Losses						Fair Value						Fair Value
Corporate notes and bonds						$	329,376					$	53					$	(90)					$	329,339					$	687,469
Corporate commercial paper						555,989						35						(100)						555,924						313,497
Obligations of U.S. government agencies						5,880						2						—						5,882						2,382
Available-for-sale investments						$	891,245					$	90					$	(190)					$	891,145					$	1,003,348
Money market funds																								48,336						179,302
Certificates of deposit																								10,137						9,623
Cash																								5,681						6,285
Total cash and investments in marketable securities																								$	955,299					$	1,198,558

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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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258

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- Definition

Tabular disclosure of the components of cash, cash equivalents, and investments.

+ References

No definition available.

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