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Fair Value Measurements (Tables)
6 Months Ended
Jun. 30, 2020
Fair Value Measurements  
Schedule of fair value of assets measured at fair value on a recurring basis, by level of fair value hierarchy

June 30, 2020

Fair Value Measured Using

Total

    

(Level 1)

    

(Level 2)

    

(Level 3)

    

Balance

Assets

 

  

 

  

 

  

 

  

Cash equivalents

$

19,834

$

$

$

19,834

Marketable securities

 

3,029

 

35,524

 

 

38,553

$

22,863

$

35,524

$

$

58,387

December 31, 2019

Fair Value Measured Using

Total

    

(Level 1)

    

(Level 2)

    

(Level 3)

    

Balance

Assets

 

  

 

  

 

  

 

  

Cash equivalents

$

4,252

$

$

$

4,252

Marketable securities

7,023

 

65,805

 

 

72,828

$

11,275

$

65,805

$

$

77,080

Schedule of fair value of available for sale marketable securities

June 30, 2020

    

    

Gross

    

Gross

    

Amortized

Unrealized

Unrealized

Fair

Cost

Gains

Losses

Value

U.S. Treasury securities

$

3,025

$

4

$

$

3,029

U.S. Government agency securities

24,481

24

(2)

24,503

Corporate debt obligations

10,994

27

11,021

$

38,500

$

55

$

(2)

$

38,553

December 31, 2019

    

    

Gross

    

Gross

    

Amortized

Unrealized

Unrealized

Fair

Cost

Gains

Losses

Value

U.S. Treasury securities

$

7,019

$

4

$

$

7,023

U.S. Government agency securities

17,701

16

17,717

Corporate debt obligations

48,079

17

(8)

48,088

$

72,799

$

37

$

(8)

$

72,828