Share-based Compensation Expense

9 Months Ended

Sep. 30, 2016

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

The following table summarizes share-based compensation expense for the three and nine months ended September 30, 2016 and 2015, which was allocated as follows (in thousands):



	Three Months Ended September 30,				Nine Months Ended September 30,
	2016		2015		2016		2015
Research and development	$	466	$	1,430	$	1,887	$	3,168
Selling, general and administrative	4,602		4,458		9,338		9,829
Total share-based compensation expense	$	5,068	$	5,888	$	11,225	$	12,997

For the three and nine months ended September 30, 2016 and 2015, we incurred share-based compensation expense due to the following types of awards (in thousands):



	Three Months Ended September 30,				Nine Months Ended September 30,
	2016		2015		2016		2015
Performance rights	$	7	$	3,262	$	575	$	4,103
Restricted stock	454		1,796		3,645		6,754
Options	4,607		830		7,005		2,140
Total share-based compensation expense	$	5,068	$	5,888	$	11,225	$	12,997