Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2019

Share-based Compensation [Abstract]

Schedule of allocated non-cash, stock-based compensation expense for all employees

Total noncash, stock-based compensation expense for all of our employees is shown in the following table for the three months ended March 31, 2019 and 2018, respectively, and was assigned to the same expense categories as the base compensation for such employees:

	For the three months ended March 31,
	2019		2018
	(In thousands)
Research and development expenses	$	161	$	191
Selling, general and administrative expenses	2,467		2,574
Total stock-based compensation	$	2,628	$	2,765