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Loans and Allowance for Credit Losses - Loan portfolio aging analysis (Details) | Mar. 31, 2023 USD ($) loan | Jun. 30, 2022 USD ($)
--- | --- | ---
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | $ 3,480,520,000 | $ 2,719,843,000
Number of PCD loans greater than 90 days past due | loan | 1 |
PCD loan greater than 90 days past due | $ 139,000 | 0
Current Loans, not past due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 3,473,138,000 | 2,715,257,000
Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 7,382,000 | 4,586,000
30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 3,253,000 | 2,432,000
60 to 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 1,008,000 | 732,000
Greater than 90 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 3,121,000 | 1,422,000
Residential Real Estate |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 1,120,970,000 | 904,160,000
Residential Real Estate | Current Loans, not past due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 1,118,021,000 | 901,694,000
Residential Real Estate | Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 2,949,000 | 2,466,000
Residential Real Estate | 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 2,110,000 | 1,402,000
Residential Real Estate | 60 to 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 203,000 |
Residential Real Estate | Greater than 90 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 636,000 | 1,064,000
Construction Real Estate |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 212,774,000 | 134,416,000
Construction Real Estate | Current Loans, not past due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 212,265,000 | 134,416,000
Construction Real Estate | Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 509,000 |
Construction Real Estate | 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 141,000 |
Construction Real Estate | 60 to 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 368,000 |
Commercial Real Estate |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 1,460,314,000 | 1,146,673,000
Commercial Real Estate | Current Loans, not past due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 1,458,261,000 | 1,145,354,000
Commercial Real Estate | Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 2,053,000 | 1,319,000
Commercial Real Estate | 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 281,000 | 416,000
Commercial Real Estate | 60 to 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 97,000 | 615,000
Commercial Real Estate | Greater than 90 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 1,675,000 | 288,000
Consumer loans |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 125,483,000 | 92,996,000
Consumer loans | Current Loans, not past due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 124,527,000 | 92,554,000
Consumer loans | Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 956,000 | 442,000
Consumer loans | 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 536,000 | 340,000
Consumer loans | 60 to 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 244,000 | 45,000
Consumer loans | Greater than 90 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 176,000 | 57,000
Commercial loans |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 560,979,000 | 441,598,000
Commercial loans | Current Loans, not past due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 560,064,000 | 441,239,000
Commercial loans | Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 915,000 | 359,000
Commercial loans | 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 185,000 | 274,000
Commercial loans | 60 to 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 96,000 | 72,000
Commercial loans | Greater than 90 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | $ 634,000 | $ 13,000

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