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Stock-Based Compensation
9 Months Ended
Sep. 30, 2018
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]  
Stock-Based Compensation

4. Stock-Based Compensation

The following table summarizes the total stock-based compensation expense included in the Company’s Condensed Consolidated Statements of Operations for the periods presented (in thousands):

 

 

 

Three Months Ended September 30,

 

 

Nine Months Ended September 30,

 

 

 

2018

 

 

2017

 

 

2018

 

 

2017

 

Cost of product sales

 

$

838

 

 

$

1,210

 

 

$

3,025

 

 

$

2,971

 

Research and development

 

 

8,066

 

 

 

6,877

 

 

 

23,617

 

 

 

18,598

 

Selling, general and administrative

 

 

11,265

 

 

 

11,611

 

 

 

34,521

 

 

 

31,944

 

 

 

$

20,169

 

 

$

19,698

 

 

$

61,163

 

 

$

53,513