Borrowings - Schedule of Borrowings (Detail) - USD ($) $ in Thousands		Jun. 30, 2022	Jun. 30, 2021
Short-term Debt [Line Items]
Short-term Debt		$ 901,337	$ 685,876
FHLB advances
Short-term Debt [Line Items]
Short-term Debt		651,337	665,876
Overnight borrowings
Short-term Debt [Line Items]
Short-term Debt	[1]	$ 250,000	$ 20,000

[1] At June 30, 2022, represents FHLB overnight line of credit borrowings. At June 30, 2021, represents unsecured overnight borrowings from other financial institutions.