Acquired Card Receivables - Summary of Outstanding Transferred Card Receivables by Class (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Jun. 30, 2021
Financing Receivable, Past Due [Line Items]
Total	$ 51,145	$ 28,601
Current and Less than 30 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	49,458	27,763
30 ~ 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	813	240
60 ~ 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	600	165
90 ~ 119 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	265	301
Over 119 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	$ 9	$ 132