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Fair Value Measurements (Tables)
9 Months Ended
Sep. 30, 2024
Fair Value Measurements  
Summary of Financial Assets Measured at Fair Value on Recurring Basis

Fair value measurement as of September 30, 2024:

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

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

​

$

37,061

​

$

37,061

​

$

—

​

$

—

Available-for-sale marketable securities:

​

 

​

​

 

  

​

 

​

​

 

​

U.S. government agency obligations

​

 

4,975

​

 

—

​

 

4,975

​

 

—

Restricted cash:

​

 

​

​

 

  

​

 

​

​

 

​

Commercial money market account

​

 

1,500

​

 

1,500

​

 

—

​

 

—

Total financial assets

​

$

43,536

​

$

38,561

​

$

4,975

​

$

—

​

Fair value measurement as of December 31, 2023:

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

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

​

$

51,775

​

$

51,775

​

$

—

​

$

—

Available-for-sale marketable securities:

​

 

  

​

 

  

​

 

  

​

 

  

U.S. Treasury securities

​

 

37,246

​

 

—

​

 

37,246

​

 

—

U.S. government agency obligations

​

 

7,238

​

 

—

​

 

7,238

​

 

—

Corporate bonds

​

 

4,499

​

 

—

​

 

4,499

​

 

—

Restricted cash:

​

 

  

​

 

  

​

 

  

​

 

  

Commercial money market account

​

 

1,908

​

 

1,908

​

 

—

​

 

—

Total financial assets

​

$

102,666

​

$

53,683

​

$

48,983

​

$

—