Fair Value of Financial Instruments - Schedule of Fair Value, by Balance Sheet Grouping (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Jun. 30, 2021
Fair Value, Inputs, Level 1 | Cash and interest-bearing deposits
Financial Instruments Owned	$ 52,050	$ 50,990
Fair Value, Inputs, Level 1 | Commercial paper
Financial Instruments Owned	312,918	189,596
Fair Value, Inputs, Level 1 | Certificates of deposit in other banks
Financial Instruments Owned	0	0
Fair Value, Inputs, Level 1 | Securities available for sale
Financial Instruments Owned	0	0
Fair Value, Inputs, Level 1 | Loans held for sale
Financial Instruments Owned	0	0
Fair Value, Inputs, Level 1 | Loans, net
Financial Instruments Owned	0	0
Fair Value, Inputs, Level 1 | Small Business Investment Company Funds
Financial Instruments Owned	0	0
Fair Value, Inputs, Level 1 | Accrued interest receivable
Financial Instruments Owned	0	52
Fair Value, Inputs, Level 1 | Noninterest-bearing and NOW deposits
Financial Instruments Owned	0	0
Fair Value, Inputs, Level 1 | Money market accounts
Financial Instruments Owned	0	0
Fair Value, Inputs, Level 1 | Savings accounts
Financial Instruments Owned	0	0
Fair Value, Inputs, Level 1 | Certificates of deposit
Financial Instruments Owned	0	0
Fair Value, Inputs, Level 1 | Other borrowings
Financial Instruments Owned	0	0
Fair Value, Inputs, Level 1 | Accrued interest payable
Financial Instruments Owned	0	0
Fair Value, Inputs, Level 2 | Cash and interest-bearing deposits
Financial Instruments Owned	0	0
Fair Value, Inputs, Level 2 | Commercial paper
Financial Instruments Owned	0	0
Fair Value, Inputs, Level 2 | Certificates of deposit in other banks
Financial Instruments Owned	28,125	40,122
Fair Value, Inputs, Level 2 | Securities available for sale
Financial Instruments Owned	106,315	156,459
Fair Value, Inputs, Level 2 | Loans held for sale
Financial Instruments Owned	0	0
Fair Value, Inputs, Level 2 | Loans, net
Financial Instruments Owned	0	0
Fair Value, Inputs, Level 2 | Small Business Investment Company Funds
Financial Instruments Owned	0	0
Fair Value, Inputs, Level 2 | Accrued interest receivable
Financial Instruments Owned	553	542
Fair Value, Inputs, Level 2 | Noninterest-bearing and NOW deposits
Financial Instruments Owned	1,356,921	1,281,372
Fair Value, Inputs, Level 2 | Money market accounts
Financial Instruments Owned	1,026,595	975,001
Fair Value, Inputs, Level 2 | Savings accounts
Financial Instruments Owned	232,831	226,391
Fair Value, Inputs, Level 2 | Certificates of deposit
Financial Instruments Owned	439,407	474,397
Fair Value, Inputs, Level 2 | Other borrowings
Financial Instruments Owned	29,997	115,000
Fair Value, Inputs, Level 2 | Accrued interest payable
Financial Instruments Owned	45	52
Fair Value, Inputs, Level 3 | Cash and interest-bearing deposits
Financial Instruments Owned	0	0
Fair Value, Inputs, Level 3 | Commercial paper
Financial Instruments Owned	0	0
Fair Value, Inputs, Level 3 | Certificates of deposit in other banks
Financial Instruments Owned	0	0
Fair Value, Inputs, Level 3 | Securities available for sale
Financial Instruments Owned	0	0
Fair Value, Inputs, Level 3 | Loans held for sale
Financial Instruments Owned	86,338	94,779
Fair Value, Inputs, Level 3 | Loans, net
Financial Instruments Owned	2,620,750	2,668,570
Fair Value, Inputs, Level 3 | Small Business Investment Company Funds
Financial Instruments Owned	12,589	10,171
Fair Value, Inputs, Level 3 | Accrued interest receivable
Financial Instruments Owned	7,427	7,339
Fair Value, Inputs, Level 3 | Noninterest-bearing and NOW deposits
Financial Instruments Owned	0	0
Fair Value, Inputs, Level 3 | Money market accounts
Financial Instruments Owned	0	0
Fair Value, Inputs, Level 3 | Savings accounts
Financial Instruments Owned	0	0
Fair Value, Inputs, Level 3 | Certificates of deposit
Financial Instruments Owned	0	0
Fair Value, Inputs, Level 3 | Other borrowings
Financial Instruments Owned	0	0
Fair Value, Inputs, Level 3 | Accrued interest payable
Financial Instruments Owned	0	0
Carrying Value | Cash and interest-bearing deposits
Financial Instruments Owned	52,050	50,990
Carrying Value | Commercial paper
Financial Instruments Owned	312,918	189,596
Carrying Value | Certificates of deposit in other banks
Financial Instruments Owned	28,125	40,122
Carrying Value | Securities available for sale
Financial Instruments Owned	106,315	156,459
Carrying Value | Loans held for sale
Financial Instruments Owned	85,263	93,539
Carrying Value | Loans, net
Financial Instruments Owned	2,668,504	2,697,799
Carrying Value | FHLB Stock
Financial Instruments Owned	3,038	6,153
Carrying Value | FRB Stock
Financial Instruments Owned	7,413	7,386
Carrying Value | Small Business Investment Company Funds
Financial Instruments Owned	12,589	10,171
Carrying Value | Accrued interest receivable
Financial Instruments Owned	7,980	7,933
Carrying Value | Noninterest-bearing and NOW deposits
Financial Instruments Owned	1,356,921	1,281,372
Carrying Value | Money market accounts
Financial Instruments Owned	1,026,595	975,001
Carrying Value | Savings accounts
Financial Instruments Owned	232,831	226,391
Carrying Value | Certificates of deposit
Financial Instruments Owned	442,810	472,777
Carrying Value | Other borrowings
Financial Instruments Owned	30,000	115,000
Carrying Value | Accrued interest payable
Financial Instruments Owned	45	52
Fair Value | Cash and interest-bearing deposits
Financial Instruments Owned	52,050	50,990
Fair Value | Commercial paper
Financial Instruments Owned	312,918	189,596
Fair Value | Certificates of deposit in other banks
Financial Instruments Owned	28,125	40,122
Fair Value | Securities available for sale
Financial Instruments Owned	106,315	156,459
Fair Value | Loans held for sale
Financial Instruments Owned	86,338	94,779
Fair Value | Loans, net
Financial Instruments Owned	2,620,750	2,668,570
Fair Value | Small Business Investment Company Funds
Financial Instruments Owned	12,589	10,171
Fair Value | Accrued interest receivable
Financial Instruments Owned	7,980	7,933
Fair Value | Noninterest-bearing and NOW deposits
Financial Instruments Owned	1,356,921	1,281,372
Fair Value | Money market accounts
Financial Instruments Owned	1,026,595	975,001
Fair Value | Savings accounts
Financial Instruments Owned	232,831	226,391
Fair Value | Certificates of deposit
Financial Instruments Owned	439,407	474,397
Fair Value | Other borrowings
Financial Instruments Owned	29,997	115,000
Fair Value | Accrued interest payable
Financial Instruments Owned	$ 45	$ 52