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Marketable Securities (Tables)
 9 Months Ended
Sep. 30, 2020
Investments Debt And Equity Securities [Abstract]  
Summary of Marketable Securities

The following table summarizes the Company’s marketable securities as of September 30, 2020 (in thousands):

 

 

 

Amortized

Cost Basis

 

 

Unrealized

Gains

 

 

Unrealized

Losses

 

 

Fair Value

 

Marketable securities:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

US government

 

$

42,204

 

 

$

347

 

 

$

—

 

 

$

42,551

 

Corporate bonds

 

 

36,939

 

 

 

141

 

 

 

—

 

 

 

37,080

 

Commercial paper

 

 

19,692

 

 

 

4

 

 

 

—

 

 

 

19,696

 

Money market funds(1)

 

 

3,288

 

 

 

—

 

 

 

—

 

 

 

3,288

 

Certificates of deposit

 

 

1,631

 

 

 

—

 

 

 

—

 

 

 

1,631

 

 

 

$

103,754

 

 

$

492

 

 

$

—

 

 

$

104,246

 

 

(1)

Included within cash and cash equivalents on the condensed consolidated balance sheets.
Summary of Fair Values of Marketable Securities by Contractual Maturity The fair values of marketable securities by contractual maturity consist of the following (in thousands)

 

 

September 30, 2020

 

 

December 31, 2019

 

Maturities within one year

 

$

98,346

 

 

$

114,386

 

Maturities after one year through three years

 

 

5,900

 

 

 

48,556

 

 

 

$

104,246

 

 

$

162,942