Computation of Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Basic Earnings per Share
Net earnings (loss)	$ (25,998)	$ 26,149
Weighted average shares	65,969	63,420
Basic earnings (loss) per common share	$ (0.39)	$ 0.41
Diluted Earnings per Share
Net earnings (loss)	$ (25,998)	$ 26,149
Weighted average shares	65,969	63,420
Dilutive effect of common stock equivalents		2,738
Diluted weighted average common shares	65,969	66,158
Diluted earnings (loss) per common share	$ (0.39)	$ 0.40