CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY Statement - USD ($) $ in Thousands	Total	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Treasury Stock, Common [Member]
Balance, beginning of period (value) at Jun. 30, 2023			$ 1,041	$ 583,836	$ 2,855,751	$ (1,832,118)
Shares, beginning of period at Jun. 30, 2023			104,088,784
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued for equity-based payment arrangements (shares)			47,660
Shares issued for Employee Stock Purchase Plan (shares)			44,616
Shares issued for equity-based payment arrangements (value)			$ 1	0
Tax withholding related to share-based compensation				(3,561)
Shares issued for Employee Stock Purchase Plan (value)			0	6,035
Stock-based compensation expense				15,480
Net Income	$ 193,644				193,644
Dividends					(75,722)
Purchase of treasury shares						(20,000)
Balance, end of period (value) at Dec. 31, 2023	$ 1,724,387		$ 1,042	601,790	2,973,673	(1,852,118)
Shares, end of period at Dec. 31, 2023			104,181,060
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared per share	$ 1.04
Balance, beginning of period (value) at Sep. 30, 2023			$ 1,041	591,458	2,919,567	(1,852,118)
Shares, beginning of period at Sep. 30, 2023			104,144,549
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued for equity-based payment arrangements (shares)			16,603
Shares issued for Employee Stock Purchase Plan (shares)			19,908
Shares issued for equity-based payment arrangements (value)			$ 1	0
Tax withholding related to share-based compensation				(617)
Shares issued for Employee Stock Purchase Plan (value)			0	2,616
Stock-based compensation expense				8,333
Net Income	$ 91,965				91,965
Dividends					(37,859)
Purchase of treasury shares						0
Balance, end of period (value) at Dec. 31, 2023	$ 1,724,387		$ 1,042	601,790	2,973,673	(1,852,118)
Shares, end of period at Dec. 31, 2023			104,181,060
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared per share	$ 0.52
Preferred Shares		0
Balance, beginning of period (value) at Jun. 30, 2024	$ 1,842,364		$ 1,042	619,805	3,081,690	(1,860,173)
Shares, beginning of period at Jun. 30, 2024			104,245,089
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued for equity-based payment arrangements (shares)			89,215
Shares issued for Employee Stock Purchase Plan (shares)			36,120
Shares issued for equity-based payment arrangements (value)			$ 1	1
Tax withholding related to share-based compensation				(7,342)
Shares issued for Employee Stock Purchase Plan (value)			1	5,210
Stock-based compensation expense				15,539
Net Income	217,036				217,036
Dividends					(80,193)
Purchase of treasury shares						(17,050)
Balance, end of period (value) at Dec. 31, 2024	$ 1,975,565		$ 1,044	633,211	3,218,533	(1,877,223)
Shares, end of period at Dec. 31, 2024			104,370,424
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared per share	$ 1.10
Balance, beginning of period (value) at Sep. 30, 2024			$ 1,043	623,381	3,160,777	(1,860,173)
Shares, beginning of period at Sep. 30, 2024			104,332,023
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued for equity-based payment arrangements (shares)			23,828
Shares issued for Employee Stock Purchase Plan (shares)			14,573
Shares issued for equity-based payment arrangements (value)			$ 1	0
Tax withholding related to share-based compensation				(1,173)
Shares issued for Employee Stock Purchase Plan (value)			0	2,169
Stock-based compensation expense				8,834
Net Income	$ 97,845				97,845
Dividends					(40,089)
Purchase of treasury shares						(17,050)
Balance, end of period (value) at Dec. 31, 2024	$ 1,975,565		$ 1,044	$ 633,211	$ 3,218,533	$ (1,877,223)
Shares, end of period at Dec. 31, 2024			104,370,424
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared per share	$ 0.55
Preferred Shares		0