Borrowings - Schedule of Fixed Rate Advances from FHLB (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Jun. 30, 2021
Debt Instrument [Line Items]
Federal Home Loan Bank, Advances, Balance, Less than one year	$ 265,000	$ 390,000
Federal Home Loan Bank, Advances, Balance Due in One to two years	145,000	145,000
Federal Home Loan Bank, Advances, Balance Due in two to three years	103,500	22,500
Federal Home Loan Bank, Advances, Balance Due in three to four years	29,000	103,500
Federal Home Loan Bank, Advances, Balance Due in four to five years	0	6,500
Federal Home Loan Bank, Advances, Balance greater than five years	0	0
Federal Home Loan Bank, Advances, Total	542,500	667,500
Federal Home Loan Bank, Advances, Unamortized Fair Value Adjustments	(1,280)	(1,624)
Total Federal Home Loan Bank, Advances, After Fair Value Adjustments	$ 541,220	$ 665,876
Federal Home Loan Bank, Advances, Weighted Average Interest Rate, Due in less than one year	0.63%	0.33%
Federal Home Loan Bank, Advances, Weighted Average Interest Rate, Due in one to two years	3.04%	3.04%
Federal Home Loan Bank, Advances, Weighted Average Interest Rate, Due in two to three years	2.65%	2.63%
Federal Home Loan Bank, Advances, Weighted Average Interest Rate, Due in three to four years	2.77%	2.68%
Federal Home Loan Bank, Advances, Weighted Average Interest Rate, Due in four to five years	0.00%	2.82%
Federal Home Loan Bank, Advances, Weighted Average Interest Rate, Due in greater than five years	0.00%	0.00%
Weighted Average [Member]
Debt Instrument [Line Items]
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Weighted Average Interest Rate	1.77%	1.38%