Share-based Compensation Expense (Tables)

3 Months Ended

Mar. 31, 2017

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Summary of Share-Based Compensation Expense

The following table summarizes share-based compensation expense, which was allocated as follows (in thousands):

	Three Months Ended March 31,
	2017		2016
Research and development	$	32	$	786
Selling, general and administrative	1,767		3,040
Total share-based compensation expense	$	1,799	$	3,826

Share-Based Compensation Expense by Types of Awards

We incurred share-based compensation expense due to the following types of awards (in thousands):

	Three Months Ended March 31,
	2017		2016
Performance rights	$	—	$	360
Restricted stock	320		2,071
Options	1,479		1,395
Total share-based compensation expense	$	1,799	$	3,826