Share-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2018

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

Schedule of share-based compensation expenses

Total share-based compensation expenses were comprised as follows (in thousands):

	Three months ended June 30,				Six months ended June 30,
	2018		2017		2018		2017
Option plan	$	6,758	$	5,649	$	9,815	$	7,071
Other share-based awards	13,847		13,018		19,736		22,110
Total share-based compensation before tax	20,605		18,667		29,551		29,181
Tax benefit	4,904		6,933		7,033		10,838
Total share-based compensation expense included in net income	$	15,701	$	11,734	$	22,518	$	18,343