Acquired Card Receivables - Summary of Acquired Card Receivables by Class (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Jun. 30, 2023
Financing Receivable, Past Due [Line Items]
Total	$ 538,489	$ 474,148
Current and less than 30 days past due
Financing Receivable, Past Due [Line Items]
Total	524,440	463,704
30 ~ 59 days past due
Financing Receivable, Past Due [Line Items]
Total	5,570	2,507
60 ~ 89 days past due
Financing Receivable, Past Due [Line Items]
Total	5,584	4,544
90 ~ 119 days past due
Financing Receivable, Past Due [Line Items]
Total	2,511	3,196
Over 119 days past due
Financing Receivable, Past Due [Line Items]
Total	$ 384	$ 197