Acquired Card Receivables - Summary of Change in Allowance for Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021
Allowance For Credit Losses [Roll Forward]
Balance, beginning	$ 7,541	$ 3,717	$ 5,414	$ 1,740
Initial allowance for credit losses on purchased card receivables with credit deterioration	0	296	10	310
Provision for expected credit losses	8,520	5,190	15,103	9,225
Charge-off amounts	(4,379)	(5,020)	(9,412)	(7,296)
Recoveries collected	266	424	833	628
Balance, end of period	$ 11,948	$ 4,607	$ 11,948	$ 4,607