Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2020

Share-based Payment Arrangement [Abstract]

Summary of Stock-Based Compensation Expense

We report our stock-based compensation expense (inclusive of our incentive stock plan, employee stock purchase plan, and 401(k) contribution matching program) in the accompanying Condensed Consolidated Statements of Operations within “total operating costs and expenses” for the three and six months ended June 30, 2020 and 2019, as follows:

	Three Months Ended June 30,				Six Months Ended June 30,
	2020		2019		2020		2019
Selling, general and administrative	$	2,878	$	3,675	$	6,755	$	7,326
Research and development	1,110		1,344		2,508		2,289
Total stock-based compensation	$	3,988	$	5,019	$	9,263	$	9,615