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Fair Value of Financial Instruments
6 Months Ended
Jun. 30, 2020
Disclosure Text Block  
Fair Value of Financial Instruments

4. Fair Value of Financial Instruments

The following table summarizes cash equivalents and marketable securities measured at fair value on a recurring basis as of June 30, 2020 (in thousands):

    

    

Active

    

Observable

    

Unobservable

June 30, 

Markets

Inputs

Inputs

Description

2020

(Level 1)

(Level 2)

(Level 3)

Financial Assets

Cash equivalents:

Money market funds

$

285,014

$

285,014

$

$

U.S. treasury obligations

Investments, available-for-sale:

U.S. government agency securities 

169,187

169,187

U.S. treasury obligations

192,409

192,409

Total

$

646,609

$

477,423

$

169,187

$

The following table summarizes cash equivalents and marketable securities measured at fair value on a recurring basis as of December 31, 2019 (in thousands):

    

    

Active

    

Observable

    

Unobservable

December 31, 

Markets

Inputs

Inputs

Description

2019

(Level 1)

(Level 2)

(Level 3)

Financial Assets

Cash equivalents:

Money market funds

$

98,946

$

98,946

$

$

U.S. treasury obligations

14,992

14,992

Investments, available-for-sale:

U.S. government agency securities 

128,312

128,312

U.S. treasury obligations

305,710

305,710

Total

$

547,960

$

419,648

$

128,312

$