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Financial Instruments (Tables)
 3 Months Ended
Mar. 31, 2024
Financial Instruments [Abstract]  
Carrying Value, Fair Value And Hierarchy Of Financial Instruments The following shows the carrying value, fair value and the hierarchy for our financial instruments as of March 31, 2024 (in thousands):

Fair Value Measure

Carrying Value

Quoted Prices in Active Markets for Identical Assets (Level 1)

Significant Other Observable Inputs (Level 2)

Significant Unobservable Inputs (Level 3)

Investments of deferred compensation plans held in trust

$

117,649 

$

117,649 

$

-

$

-

Cash equivalents

303,875 

303,875 

-

-

The following shows the carrying value, fair value and the hierarchy for our financial instruments as of December 31, 2023 (in thousands):

Fair Value Measure

Carrying Value

Quoted Prices in Active Markets for Identical Assets (Level 1)

Significant Other Observable Inputs (Level 2)

Significant Unobservable Inputs (Level 3)

Investments of deferred compensation plans held in trust

$

106,126 

$

106,126 

$

-

$

-

Cash equivalents

257,343 

257,343 

-

-