Acquired Card Receivables - Summary of Change in Allowance for Credit Losses (Details) $ in Thousands	1 Months Ended
	Jun. 30, 2021 USD ($)
Acquired Card Receivables [Abstract]
Initial allowance for credit losses on purchased card receivables with credit deterioration	$ 2,082
Provision for expected credit losses	462
Charge-off amounts	(828)
Recoveries collected	24
Balance as of June 30, 2021	$ 1,740