Earnings Per Share - Computation of Earnings Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020
Numerator
Net earnings (loss)	$ 81,092	$ 5,921	$ 215,258	$ (118,290)
Deduct preferred stock dividends	(7,013)	0	(20,353)	0
Net Earnings available to the Common Shareholders	74,079	5,921	194,905	(118,290)
Add back interest on Convertible Senior Notes Due 2022	3,066	0	9,199	0
Diluted earnings (loss) available to common shareholders	$ 77,145	$ 5,921	$ 204,103	$ (118,290)
Denominator
Common stock equivalents (in shares)	4,203,000	2,354,000	3,424,000	0
Weighted average shares (in shares)	104,767,000	91,081,000	103,883,000	82,615,000
Effect of dilutive securities:
0.25% Convertible Senior Notes due 2022 (in shares)	7,331,000	0	7,331,000	0
Diluted weighted average common shares (in shares)	116,302,000	93,435,000	114,637,000	82,615,000
Basic earnings (loss) per common share (in usd per share)	$ 0.71	$ 0.07	$ 1.88	$ (1.43)
Diluted earnings (loss) per common share (in usd per share)	$ 0.66	$ 0.06	$ 1.78	$ (1.43)
0.25% Convertible Senior Notes due 2022
Effect of dilutive securities:
Debt instrument, interest rate	0.25%	0.25%	0.25%	0.25%
Series A Preferred Stock
Numerator
Deduct preferred stock dividends	$ (6,900)	$ 0	$ (20,240)	$ 0
Preferred Shares
Numerator
Deduct preferred stock dividends	(104)	0	(104)	0
Deduct Series B redeemable preferred deemed dividend	$ (9)	$ 0	$ (9)	$ 0