Loans and Allowance for Credit Losses on Loans - Breakdown of Provision (Benefit) For Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021
Provision (benefit) for credit losses:
Loans	$ (640)	$ (3,970)	$ (4,415)	$ (6,370)
Off-balance-sheet credit exposure	650	(130)	415	10
Commercial paper	(55)	0	(5)	180
Total provision (benefit) for credit losses	$ (45)	$ (4,100)	$ (4,005)	$ (6,180)