Loans and Allowance for Credit Losses on Loans - Past Due Financing Receivables (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Jun. 30, 2023
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	$ 3,659,914	$ 3,658,823
30-89 Days
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	9,780	5,610
90 Days+
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	6,217	4,565
Total
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	15,997	10,175
Current
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	3,643,917	3,648,648
Commercial Real Estate
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	1,842,455	1,869,907
Commercial Real Estate | 30-89 Days
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	1,613	1,514
Commercial Real Estate | 90 Days+
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	491	76
Commercial Real Estate | Total
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	2,104	1,590
Commercial Real Estate | Current
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	1,840,351	1,868,317
Commercial Real Estate | Construction Loans
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	352,143	356,674
Commercial Real Estate | Construction Loans | 30-89 Days
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	0	0
Commercial Real Estate | Construction Loans | 90 Days+
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	0	0
Commercial Real Estate | Construction Loans | Total
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	0	0
Commercial Real Estate | Construction Loans | Current
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	352,143	356,674
Commercial Real Estate | Commercial Real Estate Loan, Owner Occupied
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	526,534	529,721
Commercial Real Estate | Commercial Real Estate Loan, Owner Occupied | 30-89 Days
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	660	1,514
Commercial Real Estate | Commercial Real Estate Loan, Owner Occupied | 90 Days+
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	491	76
Commercial Real Estate | Commercial Real Estate Loan, Owner Occupied | Total
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	1,151	1,590
Commercial Real Estate | Commercial Real Estate Loan, Owner Occupied | Current
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	525,383	528,131
Commercial Real Estate | Commercial Real Estate Loan, Non-Owner Occupied
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	880,348	901,685
Commercial Real Estate | Commercial Real Estate Loan, Non-Owner Occupied | 30-89 Days
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	953	0
Commercial Real Estate | Commercial Real Estate Loan, Non-Owner Occupied | 90 Days+
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	0	0
Commercial Real Estate | Commercial Real Estate Loan, Non-Owner Occupied | Total
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	953	0
Commercial Real Estate | Commercial Real Estate Loan, Non-Owner Occupied | Current
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	879,395	901,685
Commercial Real Estate | Multifamily Loan
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	83,430	81,827
Commercial Real Estate | Multifamily Loan | 30-89 Days
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	0	0
Commercial Real Estate | Multifamily Loan | 90 Days+
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	0	0
Commercial Real Estate | Multifamily Loan | Total
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	0	0
Commercial Real Estate | Multifamily Loan | Current
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	83,430	81,827
Commercial
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	855,574	849,851
Commercial | 30-89 Days
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	6,425	1,699
Commercial | 90 Days+
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	3,111	2,240
Commercial | Total
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	9,536	3,939
Commercial | Current
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	846,038	845,912
Commercial | Commercial and Industrial Loan
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	237,366	245,428
Commercial | Commercial and Industrial Loan | 30-89 Days
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	1,902	873
Commercial | Commercial and Industrial Loan | 90 Days+
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	828	403
Commercial | Commercial and Industrial Loan | Total
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	2,730	1,276
Commercial | Commercial and Industrial Loan | Current
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	234,636	244,152
Commercial | Equipment Finance
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	470,387	462,211
Commercial | Equipment Finance | 30-89 Days
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	4,226	826
Commercial | Equipment Finance | 90 Days+
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	2,283	1,837
Commercial | Equipment Finance | Total
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	6,509	2,663
Commercial | Equipment Finance | Current
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	463,878	459,548
Commercial | Municipal Loans
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	147,821	142,212
Commercial | Municipal Loans | 30-89 Days
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	297	0
Commercial | Municipal Loans | 90 Days+
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	0	0
Commercial | Municipal Loans | Total
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	297	0
Commercial | Municipal Loans | Current
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	147,524	142,212
Residential
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	849,069	826,970
Residential | 30-89 Days
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	1,281	2,077
Residential | 90 Days+
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	2,383	1,961
Residential | Total
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	3,664	4,038
Residential | Current
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	845,405	822,932
Residential | Construction Loans
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	103,381	110,074
Residential | Construction Loans | 30-89 Days
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	0	0
Residential | Construction Loans | 90 Days+
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	132	132
Residential | Construction Loans | Total
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	132	132
Residential | Construction Loans | Current
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	103,249	109,942
Residential | One-To-Four Family Loan
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	560,399	529,703
Residential | One-To-Four Family Loan | 30-89 Days
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	654	1,698
Residential | One-To-Four Family Loan | 90 Days+
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	1,144	1,060
Residential | One-To-Four Family Loan | Total
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	1,798	2,758
Residential | One-To-Four Family Loan | Current
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	558,601	526,945
Residential | HELOC's Loan
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	185,289	187,193
Residential | HELOC's Loan | 30-89 Days
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	627	379
Residential | HELOC's Loan | 90 Days+
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	1,107	769
Residential | HELOC's Loan | Total
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	1,734	1,148
Residential | HELOC's Loan | Current
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	183,555	186,045
Consumer Portfolio
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	112,816	112,095
Consumer Portfolio | 30-89 Days
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	461	320
Consumer Portfolio | 90 Days+
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	232	288
Consumer Portfolio | Total
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	693	608
Consumer Portfolio | Current
Financing Receivable, Past Due [Line Items]
Total loans, net of deferred loan fees and costs	$ 112,123	$ 111,487