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Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2020

Fair Value Disclosures [Abstract]

Fair Value Measurements of Cash Equivalents, Available-For-Sale Investment Securities and Equity Securities

The recurring fair value measurements of the Company’s cash equivalents, available-for-sale investment securities and equity securities at June 30, 2020 and December 31, 2019 consisted of the following (in thousands):

						Fair Value Measurements at Reporting Date Using
		June 30, 2020				Quoted Prices in Active Markets for Identical Assets (Level 1)				Significant Other Observable Inputs (Level 2)				Significant Unobservable Inputs (Level 3)
Money market fund		$	282,247			$	282,247			$	—			$	—
U.S. Treasury notes			186,395				186,395				—				—
Equity securities			1,247				1,247				—				—
Government sponsored enterprise securities			38,556				—				38,556				—
Corporate debt securities			90,708				—				90,708				—
Commercial paper			32,451				—				32,451				—
		$	631,604			$	469,889			$	161,715			$	—

						Fair Value Measurements at Reporting Date Using
		December 31, 2019				Quoted Prices in Active Markets for Identical Assets (Level 1)				Significant Other Observable Inputs (Level 2)				Significant Unobservable Inputs (Level 3)
Money market fund		$	98,084			$	98,084			$	—			$	—
U.S. Treasury notes			228,603				228,603				—				—
Equity securities			2,307				2,307				—				—
Government sponsored enterprise securities			103,878				—				103,878				—
Corporate debt securities			88,039				—				88,039				—
Commercial paper			102,212				—				102,212				—
		$	623,123			$	328,994			$	294,129			$	—

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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=117815213&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=117815213&loc=d3e19207-110258

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X

- References

No definition available.

+ Details

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