Summary of Significant Accounting Policies (Effect of Revision on Affected Line Items Within Consolidated Statements of Shareholders' Equity) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2020
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net Income (Loss)	$ 93,358	$ 310,991	$ 70,027
Other comprehensive income, net of tax			1,816
Reclassification adjustment for realized gain (loss) on foreign currency translation adjustments	0	296	0
Total shareholders' equity	1,457,336	1,491,386	1,293,517	$ 1,309,750
Retained Earnings
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net Income (Loss)	93,358	310,991	70,027
Total shareholders' equity	2,403,750	2,310,396	1,999,405	1,928,750
Accumulated other comprehensive loss
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Other comprehensive income, net of tax			1,816
Reclassification adjustment for realized gain (loss) on foreign currency translation adjustments		296
Total shareholders' equity	$ (2,227)	(2,227)	(9,218)	(10,908)
Previously Reported [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net Income (Loss)		317,705	76,909
Other comprehensive income, net of tax		59
Reclassification adjustment for realized gain (loss) on foreign currency translation adjustments		(349)
Total shareholders' equity		1,505,067	1,301,070	1,310,421
Previously Reported [Member] | Retained Earnings
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Total shareholders' equity		2,322,810	2,005,105	1,927,568
Previously Reported [Member] | Accumulated other comprehensive loss
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Total shareholders' equity		(960)	(7,365)	(9,055)
Adjustment
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net Income (Loss)		(6,714)	(6,882)
Other comprehensive income, net of tax		(59)
Reclassification adjustment for realized gain (loss) on foreign currency translation adjustments		645
Total shareholders' equity		(13,681)	(7,553)	(671)
Adjustment | Retained Earnings
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Total shareholders' equity		(12,414)	(5,700)	1,182
Adjustment | Accumulated other comprehensive loss
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Total shareholders' equity		$ (1,267)	$ (1,853)	$ (1,853)