Stock-Based Compensation

9 Months Ended

Sep. 30, 2020

Total stock-based compensation expense and its net impact on basic and diluted earnings per share are as follows:


	Three Months Ended				Nine Months Ended
(in thousands, except per share data)	September 30, 2020		September 30, 2019		September 30, 2020		September 30, 2019
Cost of sales:
Maintenance and service	$	3,626	$	2,422	$	9,956	$	6,024
Operating expenses:
Selling, general and administrative	18,954		16,774		50,417		44,408
Research and development	15,605		12,666		42,883		34,352
Stock-based compensation expense before taxes	38,185		31,862		103,256		84,784
Related income tax benefits	(10,060)		(9,847)		(46,849)		(30,075)
Stock-based compensation expense, net of taxes	$	28,125	$	22,015	$	56,407	$	54,709
Net impact on earnings per share:
Basic earnings per share	$	(0.33)	$	(0.26)	$	(0.66)	$	(0.65)
Diluted earnings per share	$	(0.32)	$	(0.26)	$	(0.65)	$	(0.64)