Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2018

Earnings Per Share [Abstract]

Schedule of Dilutive Effect of Stock Options RSUs and PSAs

The dilutive effect of stock options, RSUs, and PSAs for each period reported is summarized below:

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2018		2017		2018		2017
Net Income	$	16,671	$	13,692	$	42,705	$	35,806
Weighted-average number of basic shares outstanding during the    period		18,873		18,666		18,783		18,807
Dilutive effect of stock options, RSUs, and performance shares		433		358		473		411
Weighted-average number of diluted shares outstanding during the    period		19,306		19,024		19,256		19,218
Basic earnings per share	$	0.88	$	0.73	$	2.27	$	1.90
Diluted earnings per share	$	0.86	$	0.72	$	2.22	$	1.86