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Fair Value of Financial Instruments (Tables)
 9 Months Ended
Sep. 30, 2022
Fair Value Disclosures [Abstract]  
Schedule of Estimated Fair Values of Financial Instruments Outstanding

The estimated fair values of financial instruments outstanding were (in thousands):

 

 

 

September 30, 2022

 

 

 

 

 

 

 

Unrealized

 

 

Unrealized

 

 

Fair

 

 

 

Cost

 

 

Gains

 

 

Loss

 

 

Value

 

Cash and cash equivalents

 

$

2,852

 

 

$

—

 

 

$

—

 

 

$

2,852

 

Short-term investments

 

 

1,107

 

 

 

—

 

 

 

(36

)

 

 

1,071

 

 

 

$

3,959

 

 

$

—

 

 

$

(36

)

 

$

3,923

 

 

 

 

December 31, 2021

 

 

 

 

 

 

 

Unrealized

 

 

Unrealized

 

 

Fair

 

 

 

Cost

 

 

Gains

 

 

Losses

 

 

Value

 

Cash and cash equivalents

 

$

5,893

 

 

$

—

 

 

$

—

 

 

$

5,893

 

Short-term investments

 

 

9,276

 

 

 

—

 

 

 

(9

)

 

 

9,267

 

Long-term investments

 

 

2,935

 

 

 

—

 

 

 

(7

)

 

 

2,928

 

 

 

$

18,104

 

 

$

—

 

 

$

(16

)

 

$

18,088

 

 

 
Schedule of Fair Value Hierarchy for Financial Assets (Cash Equivalents and Investments)

The following table represents the Company’s fair value hierarchy for its financial assets (cash equivalents and investments) (in thousands):

 

 

 

September 30, 2022

 

 

 

Fair Value

 

 

Level 1

 

 

Level 2

 

 

Level 3

 

Money market funds

 

$

72

 

 

$

72

 

 

$

—

 

 

$

—

 

Corporate notes and commercial paper

 

$

1,071

 

 

$

—

 

 

$

1,071

 

 

$

—

 

 

 

$

1,143

 

 

$

72

 

 

$

1,071

 

 

$

—

 

 

 

 

December 31, 2021

 

 

 

Fair Value

 

 

Level 1

 

 

Level 2

 

 

Level 3

 

Money market funds

 

$

1,159

 

 

$

1,159

 

 

$

—

 

 

$

—

 

Corporate notes and commercial paper

 

$

12,195

 

 

$

—

 

 

$

12,195

 

 

$

—