Income Taxes (Schedule of Valuation Allowance) (Details) - USD ($) $ in Thousands	2 Months Ended	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2022	Apr. 30, 2021	Apr. 30, 2020
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Additions charged to costs and expenses		$ 5,400
Deductions		(4,800)
Valuation allowance, decrease in deferred tax asset		600
Valuation allowance
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance, beginning of the period	$ 55,401	55,784	$ 45,124	$ 47,070
Additions charged to costs and expenses	389	4,752	13,492	2,151
Deductions	(6)	(5,364)	(3,215)	(4,097)
Balance, end of the period	$ 55,784	$ 55,172	$ 55,401	$ 45,124