CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY - 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 (Loss) Income	Accumulated Other Comprehensive (Loss) Income Cumulative Effect, Period of Adoption, Adjustment
Beginning balance (in shares) at Jun. 30, 2018			108,422				4,470
Beginning balance at Jun. 30, 2018	$ 1,737,049		$ 1,084	$ 1,148,196	$ 878,516		$ (106,507)	$ (184,240)
Beginning balance (ASU 2016-01) at Jun. 30, 2018		$ 0				$ (348)			$ 348
Beginning balance (ASU 2014-09) at Jun. 30, 2018		163				163
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(183,314)				(183,314)
Other comprehensive income (loss)	(41,112)							(41,112)
Issuance of common stock pursuant to compensation plans (in shares)			411
Issuance of common stock pursuant to stock-based compensation plans	0		$ 4	(4)
Shares withheld for payment of employee payroll taxes due on shares issued under stock-based compensation plans (in shares)							144
Shares withheld for payment of employee payroll taxes due on shares issued under stock-based compensation plans	(3,532)						$ (3,532)
Stock-based compensation expense	10,065			10,065
Ending balance (in shares) at Jun. 30, 2019			108,833				4,614
Ending balance at Jun. 30, 2019	$ 1,519,319		$ 1,088	1,158,257	695,017		$ (110,039)	(225,004)
Ending balance (ASU 2016-02) at Jun. 30, 2019		(439)				(439)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accounting Standards Update [Extensible List] | ASU 2016-02	ASU 2016-02
Net income (loss)	$ (80,407)				(80,407)
Other comprehensive income (loss)	53,612							53,612
Issuance of common stock pursuant to compensation plans (in shares)			290
Issuance of common stock pursuant to stock-based compensation plans	0		$ 4	(4)
Shares withheld for payment of employee payroll taxes due on shares issued under stock-based compensation plans (in shares)							73
Shares withheld for payment of employee payroll taxes due on shares issued under stock-based compensation plans	(1,931)						$ (1,931)
Repurchases of common stock (in shares)							2,551
Repurchases of common stock	(60,222)						$ (60,222)
Stock-based compensation expense	$ 13,622			13,622
Ending balance (in shares) at Jun. 30, 2020	109,123		109,123				7,238
Ending balance at Jun. 30, 2020	$ 1,443,554		$ 1,092	1,171,875	614,171		$ (172,192)	(171,392)
Ending balance (ASU 2016-13) at Jun. 30, 2020		$ (310)				$ (310)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accounting Standards Update [Extensible List] | ASU 2016-13	ASU 2016-13
Net income (loss)	$ 77,364				77,364
Other comprehensive income (loss)	98,381							98,381
Issuance of common stock pursuant to compensation plans (in shares)			384
Issuance of common stock pursuant to stock-based compensation plans	0		$ 4	(4)
Shares withheld for payment of employee payroll taxes due on shares issued under stock-based compensation plans (in shares)							120
Shares withheld for payment of employee payroll taxes due on shares issued under stock-based compensation plans	(4,282)						$ (4,282)
Repurchases of common stock (in shares)							3,080
Repurchases of common stock	(107,483)						$ (107,483)
Stock-based compensation expense	$ 15,659			15,659
Ending balance (in shares) at Jun. 30, 2021	109,507		109,507				10,438
Ending balance at Jun. 30, 2021	$ 1,522,883		$ 1,096	$ 1,187,530	$ 691,225		$ (283,957)	$ (73,011)