Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2018

Earnings Per Share [Abstract]

Schedule of Basic And Diluted Earnings Per Share

The computation of basic and diluted earnings per share is shown below (in thousands, except per share amounts).

	Three Months Ended September 30,				Nine Months Ended September 30,
	2018		2017		2018		2017
Net income	$	47,514	$	22,517	$	113,585	$	61,755
Weighted average common shares outstanding	71,436		72,298		72,001		72,239
Dilutive effect of stock-based awards	316		303		299		278
Shares used in computing diluted earnings per share	71,752		72,601		72,300		72,517
Basic earnings per share	$	0.67	$	0.31	$	1.58	$	0.85
Diluted earnings per share	$	0.66	$	0.31	$	1.57	$	0.85