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Employee Stock Benefit Plans (Tables)
6 Months Ended
Jun. 30, 2020
Table Text Blocks  
Share-based compensation expense reflected in the condensed consolidated statements of operations

The following table summarizes share-based compensation expense (in thousands):

Three Months Ended

Six Months Ended

June 30, 

June 30, 

    

2020

    

2019

    

2020

    

2019

 

Research and development

$

1,405

$

1,179

$

2,801

$

4,098

Selling, general and administrative

5,686

 

5,021

 

10,654

15,519

Restructuring expenses

137

 

 

654

$

7,091

$

6,337

$

13,455

$

20,271