Comprehensive Income (Loss) - Schedule of Comprehensive (Loss) Income (Detail) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Net unrealized holding (loss) gain on securities available for sale		$ (59,249)	$ (22,285)	$ (73,995)	$ (20,374)
Net realized gain on sale and call of securities available for sale	[1]	(3)	(18)	(4)	(454)
Fair value adjustments on derivatives		24,611	15,062	32,878	20,929
Amortization of actuarial loss		20	20	60	62
Other comprehensive (loss) income before taxes		(34,621)	(7,221)	(41,061)	163
Tax effect		10,098	2,125	11,968	(63)
Total Other Comprehensive (Loss) Income		$ (24,523)	$ (5,096)	$ (29,093)	$ 100

[1] Represents amounts reclassified out of accumulated other comprehensive income and included in gain on sale of securities on the consolidated statements of income.