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Employee Retirement and Postretirement Benefits (Tables)
9 Months Ended
Sep. 30, 2020
Text Block [Abstract]  
Summary of Stock-Based Compensation Expense by Operating Expense

The following is a summary of our stock-based compensation expense by operating expense line in the unaudited condensed consolidated statements of operations (in thousands):

 

 

 

For the Three Months

 

 

For the Nine Months

 

 

 

Ended September 30,

 

 

Ended September 30,

 

 

 

2020

 

 

2019

 

 

2020

 

 

2019

 

Cost of service revenue

 

$

179

 

 

$

27

 

 

$

239

 

 

$

90

 

Cost of equipment revenue

 

 

203

 

 

 

60

 

 

 

338

 

 

 

211

 

Engineering, design and development

 

 

584

 

 

 

158

 

 

 

902

 

 

 

439

 

Sales and marketing

 

 

413

 

 

 

386

 

 

 

938

 

 

 

1,189

 

General and administrative

 

 

3,301

 

 

 

1,641

 

 

 

5,866

 

 

 

4,802

 

Total stock-based compensation expense

 

$

4,680

 

 

$

2,272

 

 

$

8,283

 

 

$

6,731