Acquired Card Receivables - Summary of Change in Allowance for Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2024	Dec. 31, 2023
Allowance For Credit Losses [Roll Forward]
Balance, beginning	$ 24,868	$ 18,513	$ 20,883	$ 15,498
Provision for expected credit losses	10,060	14,354	25,231	26,329
Charge-off amounts	(15,985)	(12,118)	(29,013)	(21,908)
Recoveries collected	1,825	760	3,667	1,590
Balance, ending	$ 20,768	$ 21,509	$ 20,768	$ 21,509