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Fair Value
3 Months Ended
Apr. 03, 2021
Fair Value Disclosures [Abstract]  
Fair Value Fair Value
For publicly-traded investment securities, which consist of the Company’s money market, short-duration bond fund and managed income fund, fair value is determined on the basis of quoted market prices and, accordingly, such investments are classified as Level 1. The Company’s wholly-owned captive insurance company may also invest in the Company’s commercial paper. These short-term commercial paper investments are classified as trading securities and carried at fair value based upon the Level 2 fair value hierarchy.

Items Measured at Fair Value
The following table presents the items measured at fair value as of April 3, 2021 and December 31, 2020:

 Fair Value
April 3,
2021
December 31, 2020
Cash and cash equivalents:
Money market fund (Level 1)$100,898 197,835 
Short-term investments:
Short-term investments (Level 1) (1)
782,267 571,741 
(1) The Company's short-term investments are in a short-duration bond fund and a managed income fund that are designed to deliver current income consistent with the preservation of capital through investing in high-and medium grade fixed income securities. The investments are readily convertible into cash.
The fair values and carrying values of the Company's debt are disclosed in Note 18 - Debt.