Earnings Per Share (Tables)

3 Months Ended

Sep. 30, 2018

Earnings Per Share [Abstract]

Calculation of Basic and Diluted Earnings per Share

The chart below shows the calculation of basic and diluted earnings per share (in thousands, except per share amounts):

	Three Months Ended
	September 30,
	2018		2017
Net income	$	78,833	$	42,046
Weighted-average number of basic shares outstanding    during the period		24,737		24,487
Dilutive effect of RSUs after application of treasury    stock method		687		756
Weighted-average number of diluted shares outstanding    during the period		25,424		25,243
Basic earnings per share	$	3.19	$	1.72
Diluted earnings per share	$	3.10	$	1.67