Earnings Per Share (Tables)

9 Months Ended

Mar. 31, 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				Nine Months Ended
	March 31,				March 31,
	2018		2017		2018		2017
Net income	$	64,499	$	40,357	$	249,340	$	119,440
Weighted-average number of basic shares outstanding    during the period		24,656		24,419		24,588		24,382
Dilutive effect of RSUs after application of treasury    stock method		578		687		641		652
Weighted-average number of diluted shares outstanding    during the period		25,234		25,106		25,229		25,034
Basic earnings per share	$	2.62	$	1.65	$	10.14	$	4.90
Diluted earnings per share	$	2.56	$	1.61	$	9.88	$	4.77