Acquired Card Receivables - Schedule of Change in Allowance for Credit Losses (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Allowance For Credit Losses [Roll Forward]
Balance, beginning	$ 20,883	$ 15,498
Provision for expected credit losses	45,326	52,327
Charge-off amounts	(59,265)	(51,805)
Recoveries collected	8,076	4,863
Balance, ending	$ 15,020	$ 20,883