XML 30 R19.htm IDEA: XBRL DOCUMENT v3.22.4
Fair Value Measurements
12 Months Ended
Dec. 31, 2022
Fair Value Measurements  
Fair Value Measurements

11. Fair Value Measurements

The following tables summarize the Company’s financial assets measured at fair value on a recurring basis as of December 31, 2022 and 2021, and by level within the fair value hierarchy:

Fair value measurement as of December 31, 2022:

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Quoted prices in

​

Significant other

​

Significant

Financial assets

​

​

​

​

active markets for

​

observable

​

unobservable

​

​

​

​

​

identical assets

​

inputs

​

inputs

Type of Instrument

    

Total

    

(Level 1)

    

(Level 2)

    

(Level 3)

Cash and cash equivalents:

 

​

  

 

​

  

 

​

  

 

​

  

Money market funds and checking accounts

​

$

63,741

​

$

63,741

​

$

—

​

$

—

Available-for-sale marketable securities:

​

 

​

​

 

  

​

 

​

​

 

​

U.S. government agency obligations

​

 

8,877

​

 

—

​

 

8,877

​

 

—

Corporate bonds

​

 

35,185

​

 

—

​

 

35,185

​

 

—

Commercial paper

​

 

26,875

​

 

—

​

 

26,875

​

 

—

Municipal bonds

​

 

22,071

​

 

—

​

 

22,071

​

 

—

Restricted cash:

​

 

​

​

 

  

​

 

​

​

 

​

Commercial money market account

​

 

408

​

 

408

​

 

—

​

 

—

Total financial assets

​

$

157,157

​

$

64,149

​

$

93,008

​

$

—

​

Fair value measurement as of December 31, 2021:

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Quoted prices in

​

Significant other

​

Significant

Financial assets

​

​

​

​

active markets for

​

observable

​

unobservable

​

​

​

​

​

identical assets

​

inputs

​

inputs

Type of Instrument

    

Total

    

(Level 1)

    

(Level 2)

    

(Level 3)

Cash and cash equivalents:

 

​

  

 

​

  

 

​

  

 

​

  

Money market funds and checking accounts

​

$

13,453

​

$

13,453

​

$

—

​

$

—

Available-for-sale marketable securities:

​

 

  

​

 

  

​

 

  

​

 

  

U.S. Treasury securities

​

​

11,570

​

​

—

​

​

11,570

​

​

—

U.S. government agency obligations

​

 

16,975

​

 

—

​

 

16,975

​

 

—

Corporate bonds

​

 

66,324

​

 

—

​

 

66,324

​

 

—

Commercial paper

​

 

106,888

​

 

—

​

 

106,888

​

 

—

Municipal bonds

​

​

21,579

​

​

—

​

​

21,579

​

​

—

Restricted cash:

​

 

  

​

 

  

​

 

  

​

 

  

Commercial money market account

​

 

408

​

 

408

​

 

—

​

 

—

Total financial assets

​

$

237,197

​

$

13,861

​

$

223,336

​

$

—

​

There were no purchases, sales or maturities of Level 3 financial assets and no unrealized gains or losses related to Level 3 available-for-sale marketable securities for the years ended December 31, 2022, 2021 and 2020. There were no transfers of financial assets between Levels 1, 2, or 3 classifications during the years ended December 31, 2022 and 2021.