Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2021

Share-based Payment Arrangement [Abstract]

Stock-Based Compensation Expense

We recognized total stock-based compensation expense in our Condensed Consolidated Statements of Operations as follows (in thousands):

	Three months ended June 30,				Six months ended June 30,
	2021		2020		2021		2020
Cost of goods sold	$	716	$	664	$	1,443	$	1,424
Research and development	13,479		14,161		27,641		29,614
General and administrative	9,519		8,546		18,528		16,544
Impairment of assets and other costs for terminated program	—		—		—		1,025
Total stock-based compensation	$	23,714	$	23,371	$	47,612	$	48,607

Share-based Compensation, Activity

We issued stock-based awards and resulting shares of our common stock as follows (shares in thousands):

	Three months ended June 30,				Six months ended June 30,
	2021		2020		2021		2020
Options granted	157		—		278		49
Weighted-average grant-date fair value of options granted	$	9.78	$	—	$	10.23	$	11.88
RSUs granted	520		275		887		520
Weighted-average grant-date fair value of RSUs granted	$	18.20	$	21.65	$	19.21	$	20.36
Shares issued under equity compensation plans	1,483		947		3,682		2,305