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Fair value measurements (Tables)
6 Months Ended
Jun. 30, 2022
Fair value measurements  
Assets and liabilities measured at fair value on a recurring basis

Assets and liabilities measured at fair value on a recurring basis as of June 30, 2022 and December 31, 2021 are as follows:

Quoted Prices

Significant

 

in Active

Other

Significant

 

Markets for

Observable

Unobservable

 

Identical Assets

Inputs

Inputs

Assets

    

Total

    

(Level 1)

    

(Level 2)

    

(Level 3)

 

June 30, 2022

(in thousands)

 

Money market funds included in cash and cash equivalents

    

$

75,562

    

$

75,562

    

$

    

$

Marketable securities - U.S. Treasury notes

 

69,727

 

69,727

 

 

Total

$

145,288

$

145,288

$

$

December 31, 2021

Money market funds included in cash and cash equivalents

    

$

100,305

    

$

100,305

    

$

    

$

Marketable securities - U.S. Treasury notes

15,106

 

15,106

Total

$

115,411

$

115,411

$

$