CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (UNAUDITED) - USD ($) shares in Thousands, $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Common Stock	Additional Paid-In Capital	Retained Earnings	Retained Earnings Cumulative Effect, Period of Adoption, Adjustment	Treasury Stock	Accumulated Other Comprehensive Income (Loss)
Balance (shares) at Jun. 30, 2020			109,123				7,238
Balance at Jun. 30, 2020	$ 1,443,554	$ (310)	$ 1,092	$ 1,171,875	$ 614,171	$ (310)	$ (172,192)	$ (171,392)
Increase (Decrease) in Stockholders' Equity
Net income	485				485
Other comprehensive income (loss)	31,005							31,005
Issuance of common stock pursuant to stock-based compensation plans (shares)			54
Issuance of common stock pursuant to stock-based compensation plans	0		$ 1	(1)
Employee shares withheld for taxes (shares)							20
Employee shares withheld for taxes	(468)						$ (468)
Repurchases of common stock (shares)							1,281
Repurchase of common stock	(42,052)						$ (42,052)
Stock-based compensation expense	4,367			4,367
Balance (shares) at Sep. 30, 2020			109,177				8,539
Balance at Sep. 30, 2020	1,436,581		$ 1,093	1,176,241	614,346		$ (214,712)	(140,387)
Balance (shares) at Jun. 30, 2020			109,123				7,238
Balance at Jun. 30, 2020	1,443,554	$ (310)	$ 1,092	1,171,875	614,171	$ (310)	$ (172,192)	(171,392)
Increase (Decrease) in Stockholders' Equity
Net income	36,879
Balance (shares) at Mar. 31, 2021			109,466				9,753
Balance at Mar. 31, 2021	1,501,682		$ 1,096	1,183,759	650,740		$ (256,231)	(77,682)
Balance (shares) at Sep. 30, 2020			109,177				8,539
Balance at Sep. 30, 2020	1,436,581		$ 1,093	1,176,241	614,346		$ (214,712)	(140,387)
Increase (Decrease) in Stockholders' Equity
Net income	2,140				2,140
Other comprehensive income (loss)	43,044							43,044
Issuance of common stock pursuant to stock-based compensation plans (shares)			162
Issuance of common stock pursuant to stock-based compensation plans	0		$ 2	(2)
Employee shares withheld for taxes (shares)							38
Employee shares withheld for taxes	(1,255)						$ (1,255)
Repurchases of common stock (shares)							923
Repurchase of common stock	(29,684)						$ (29,684)
Stock-based compensation expense	3,823			3,823
Balance (shares) at Dec. 31, 2020			109,339				9,500
Balance at Dec. 31, 2020	1,454,649		$ 1,095	1,180,062	616,486		$ (245,651)	(97,343)
Increase (Decrease) in Stockholders' Equity
Net income	34,254				34,254
Other comprehensive income (loss)	19,661							19,661
Issuance of common stock pursuant to stock-based compensation plans (shares)			127
Issuance of common stock pursuant to stock-based compensation plans	0		$ 1	(1)
Employee shares withheld for taxes (shares)							49
Employee shares withheld for taxes	(2,018)						$ (2,018)
Repurchases of common stock (shares)							204
Repurchase of common stock	(8,562)						$ (8,562)
Stock-based compensation expense	3,698			3,698
Balance (shares) at Mar. 31, 2021			109,466				9,753
Balance at Mar. 31, 2021	$ 1,501,682		$ 1,096	1,183,759	650,740		$ (256,231)	(77,682)
Balance (shares) at Jun. 30, 2021	109,507		109,507				10,438
Balance at Jun. 30, 2021	$ 1,522,883		$ 1,096	1,187,530	691,225		$ (283,957)	(73,011)
Increase (Decrease) in Stockholders' Equity
Net income	19,411				19,411
Other comprehensive income (loss)	(20,963)							(20,963)
Issuance of common stock pursuant to stock-based compensation plans (shares)			61
Issuance of common stock pursuant to stock-based compensation plans	0
Employee shares withheld for taxes (shares)							29
Employee shares withheld for taxes	(1,175)						$ (1,175)
Repurchases of common stock (shares)							4,525
Repurchase of common stock	(175,687)						$ (175,687)
Stock-based compensation expense	4,287			4,287
Balance (shares) at Sep. 30, 2021			109,568				14,992
Balance at Sep. 30, 2021	$ 1,348,756		$ 1,096	1,191,817	710,636		$ (460,819)	(93,974)
Balance (shares) at Jun. 30, 2021	109,507		109,507				10,438
Balance at Jun. 30, 2021	$ 1,522,883		$ 1,096	1,187,530	691,225		$ (283,957)	(73,011)
Increase (Decrease) in Stockholders' Equity
Net income	$ 74,831
Balance (shares) at Mar. 31, 2022	111,087		111,087				21,287
Balance at Mar. 31, 2022	$ 1,144,044		$ 1,111	1,199,804	766,056		$ (712,577)	(110,350)
Balance (shares) at Sep. 30, 2021			109,568				14,992
Balance at Sep. 30, 2021	1,348,756		$ 1,096	1,191,817	710,636		$ (460,819)	(93,974)
Increase (Decrease) in Stockholders' Equity
Net income	30,889				30,889
Other comprehensive income (loss)	(256)							(256)
Issuance of common stock pursuant to stock-based compensation plans (shares)			1,436
Issuance of common stock pursuant to stock-based compensation plans	0		$ 14	(14)
Employee shares withheld for taxes (shares)							654
Employee shares withheld for taxes	(29,858)						$ (29,858)
Repurchases of common stock (shares)							2,027
Repurchase of common stock	(89,831)						$ (89,831)
Stock-based compensation expense	4,156			4,156
Balance (shares) at Dec. 31, 2021			111,004				17,673
Balance at Dec. 31, 2021	1,263,856		$ 1,110	1,195,959	741,525		$ (580,508)	(94,230)
Increase (Decrease) in Stockholders' Equity
Net income	24,531				24,531
Other comprehensive income (loss)	(16,120)							(16,120)
Issuance of common stock pursuant to stock-based compensation plans (shares)			83
Issuance of common stock pursuant to stock-based compensation plans	0		$ 1	(1)
Employee shares withheld for taxes (shares)							40
Employee shares withheld for taxes	(1,597)						$ (1,597)
Repurchases of common stock (shares)							3,574
Repurchase of common stock	(130,472)						$ (130,472)
Stock-based compensation expense	$ 3,846			3,846
Balance (shares) at Mar. 31, 2022	111,087		111,087				21,287
Balance at Mar. 31, 2022	$ 1,144,044		$ 1,111	$ 1,199,804	$ 766,056		$ (712,577)	$ (110,350)