Allowance for Credit Losses - Allowance for Credit Losses on Financing Receivables Off Balance Sheet Commitments (Detail) - USD ($) $ in Thousands		3 Months Ended	6 Months Ended
		Dec. 31, 2020	Dec. 31, 2020
Receivables [Abstract]
Beginning balance		$ 1,004
Provision recorded in other non-interest expense		54	$ 522
Total allowance for credit losses on off balance sheet commitments		$ 1,058	1,058
Impact of adopting Topic 326	[1]		$ 536

[1] Adoption of CECL accounting standard effective July 1, 2020.