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Fair Value Measurements (Tables)
 3 Months Ended
Mar. 31, 2021
Fair Value Disclosures [Abstract]  
Schedule of fair value of assets and liabilities measured on recurring basis
The following tables set forth our assets and liabilities that were measured at fair value on a recurring basis by level within the fair value hierarchy:
(in thousands)
As of March 31, 2021Quoted Prices
in Active
Markets for
Identical Assets
(Level 1)		Significant
Other
Observable
Inputs
(Level 2)		Significant
Unobservable
Inputs
(Level 3)		Balance at March 31, 2021
    
Assets    
Money market funds(1)
$76 $— $— $76 
Equity mutual funds(2)
$1,079 $— $— $1,079 
Cross currency swaps(3)
$— $1,510 $— $1,510 
Foreign currency exchange contracts(3)
$— $2,223 $— $2,223 
Liabilities
Foreign currency exchange contracts(3)
$— $6,897 $— $6,897 
Deferred compensation(4)
$1,079 $— $— $1,079 
(in thousands)
As of December 31, 2020Quoted Prices
in Active
Markets for
Identical Assets
(Level 1)		Significant
Other
Observable
Inputs
(Level 2)		Significant
Unobservable
Inputs
(Level 3)		Balance at December 31, 2020
    
Assets    
Money market funds(1)
$76 $— $— $76 
Equity mutual funds(2)
$1,145 $— $— $1,145 
Foreign currency exchange contracts(3)
$— $125 $— $125 
Liabilities
Cross currency swaps(3)
$— $2,841 $— $2,841 
Foreign currency exchange contracts(3)
$— $12,373 $— $12,373 
Deferred compensation(4)
$1,145 $— $— $1,145 
(1)Money market funds with an original maturity of less than ninety days are included within cash and cash equivalents. The remaining balance of cash and cash equivalents as of March 31, 2021 and December 31, 2020, consisted of demand deposits.
(2)Equity mutual funds relate to a deferred compensation plan that was assumed as part of a previous business combination. This amount is included within other long-term assets. See footnote (4) below for a discussion of the related deferred compensation liability. 
(3)Cross currency swaps and foreign currency exchange contracts are included within other current assets, other long-term assets, accrued liabilities, or other long-term liabilities depending on the gain (loss) position and anticipated settlement date.  
(4)A deferred compensation plan assumed as part of a previous business combination is included within accrued liabilities and other long-term liabilities. The fair value of our deferred compensation plan is indexed to the performance of the underlying equity mutual funds discussed in footnote (2) above.