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Fair Value Measurements (Tables)

3 Months Ended

Mar. 30, 2018

Fair Value Disclosures [Abstract]

Classification of Financial Assets Measured and Recorded at Fair Value 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; the amounts presented exclude cash, but include investments classified as cash equivalents (in thousands):

	March 31, 2018
	Level 1				Level 2				Total
Money market funds	$	55,241			$	—			$	55,241
Commercial paper	—				237,067				237,067
Corporate bonds	—				190,531				190,531
U.S. Treasury and government sponsored enterprises	—				21,433				21,433
Total financial assets	$	55,241			$	449,031			$	504,272

	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 financial assets	$	45,478			$	394,932			$	440,410

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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/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19190-110258

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258

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X

- References

No definition available.

+ Details

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