Securities - Additional Information (Detail)	3 Months Ended		9 Months Ended
	Mar. 31, 2022 USD ($)	Mar. 31, 2021 USD ($)	Mar. 31, 2022 USD ($)	Jun. 30, 2021 Securities
Investments, Debt and Equity Securities [Abstract]
Held to maturity gains (losses) recognized on calls of securities	$ 0	$ 0	$ 0
Held-to-maturity, securities with unrealized losses, Number of positions | Securities				0
Debt Securities, Available-for-sale, Allowance for Credit Loss	$ 0		$ 0