Earnings Per Share - Computation of Earnings Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Numerator
Net earnings	$ 74,464	$ 46,266
Deduct preferred stock dividends	(17,082)	(6,440)
Deduct Series B redeemable preferred dividends	(10,000)
Net Earnings available to the Common Shareholders	57,382	39,826
Add back interest on Convertible Senior Notes Due 2022 (net of tax)	502	0
Diluted earnings available to common shareholders	$ 57,884	$ 39,826
Denominator
Weighted average shares (in shares)	105,761,000	102,809,000
Common stock equivalents (in shares)	2,758,000	2,438,000
Effect of dilutive securities:
0.25% Convertible Senior Notes due 2022 (in shares)	7,330,000	0
Diluted weighted average common shares (in shares)	115,849,000	105,247,000
Basic earnings (loss) per common share (in usd per share)	$ 0.54	$ 0.39
Diluted earnings (loss) per common share (in usd per share)	$ 0.50	$ 0.38
0.25% Convertible Senior Notes due 2022
Effect of dilutive securities:
Debt instrument, interest rate	0.25%	0.25%
Series A Preferred Stock
Numerator
Deduct preferred stock dividends	$ (6,900)	$ (6,440)
Preferred Shares
Numerator
Deduct Series B redeemable preferred dividends	$ (10,182)	$ 0