Stock-Based Compensation Plans (Tables)

3 Months Ended

Mar. 31, 2019

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Stock-Based Compensation Expense

Total stock-based compensation expense was as follows:

	Three Months Ended March 31,
	2019		2018
	(In thousands)
Employees	$	4,916	$	3,692
Non-employee directors		280		259
Total stock-based compensation	$	5,196	$	3,951