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Fair Value Measurements (Tables)

12 Months Ended

Dec. 28, 2018

Fair Value Disclosures [Abstract]

Schedule of Fair Value of Financial Assets Measured on a Recurring Basis

The classification of our financial assets within the fair value hierarchy that were measured and recorded at fair value on a recurring basis was as follows (in thousands):

	December 31, 2018
	Level 1				Level 2				Total
Money market funds	$	47,744			$	—			$	47,744
Commercial paper	—				381,133				381,133
Corporate bonds	—				344,064				344,064
U.S. Treasury and government sponsored enterprises	—				55,201				55,201
Total investments available-for-sale	47,744				780,398				828,142
Certificates of deposit	—				16,596				16,596
Total financial assets carried at fair value	$	47,744			$	796,994			$	844,738

	December 31, 2017
	Level 1				Level 2				Total
Money market funds	$	45,478			$	—			$	45,478
Commercial paper	—				199,647				199,647
Corporate bonds	—				179,022				179,022
U.S. Treasury and government sponsored enterprises	—				16,263				16,263
Total investments available-for-sale	45,478				394,932				440,410
Certificates of deposit	—				13,498				13,498
Total financial assets carried at fair value	$	45,478			$	408,430			$	453,908

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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=99377789&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 1
-URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19190-110258

Reference 3: 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=99377789&loc=d3e19207-110258

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- References

No definition available.

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