Acquired Card Receivables - Summary of Change in Allowance for Credit Losses (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Allowance For Credit Losses [Roll Forward]
Balance, beginning	$ 5,414	$ 1,740
Initial allowance for credit losses on purchased card receivables with credit deterioration	10	313
Provision for expected credit losses	32,015	19,566
Charge-off amounts	(24,120)	(18,005)
Recoveries collected	2,179	1,800
Balance, ending	$ 15,498	$ 5,414