Acquired Card Receivables - Summary of Change in Allowance for Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Mar. 31, 2022	Mar. 31, 2022
Acquired Card Receivables [Abstract]
Balance, beginning	$ 4,607	$ 1,740
Initial allowance for credit losses on purchased card receivables with credit deterioration	1	311
Provision for expected credit losses	6,085	15,310
Charge-off amounts	(5,774)	(13,070)
Recoveries collected	481	1,109
Balance, end of period	$ 5,400	$ 5,400