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Organization and Summary of Significant Accounting Policies - New Accounting Pronouncements - Schedule of Adoption of ASU 2016-13 (Details) - USD ($) | Jul. 01, 2020 | Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2018
--- | --- | --- | --- | --- | ---
Allowance for Credit Loss on loans | $ 25,139,000 | $ 33,222,000 | $ 25,139,000 | $ 19,903,000 | $ 18,214,000
Total allowance for credit losses on off-balance sheet credit exposures | 1,959,000 | 1,805,000 | 1,959,000 |  |
As reported prior to ASU 2016-13 |  |  |  |  |
Loans receivable | 2,141,929,000 |  |  |  |
Cumulative Effect, Period of Adoption, Adjusted Balance |  |  |  |  |
Allowance for Credit Loss on loans | 34,472,000 |  |  |  |
Total allowance for credit losses on off-balance sheet credit exposures | 2,227,000 |  |  |  |
Retained earnings | 7,200,000 |  |  |  |
Cumulative Effect, Period of Adoption, Adjusted Balance | As reported under ASU 2016-13 |  |  |  |  |
Loans receivable | 2,142,363,000 |  |  |  |
Cumulative Effect, Period of Adoption, Adjusted Balance | Impact of adoption ASU 2016-13 |  |  |  |  |
Increase to the ACL | 8,900,000 |  |  |  |
Adjustment to the reserve for unfunded commitments | 268,000 |  |  |  |
Cumulative Effect, Period of Adoption, Adjusted Balance | Purchased credit deteriorated ("PCD") loans |  |  |  |  |
Increase to ACL | 434,000 |  |  |  |
Impact of ASU 2016-13 adoption |  |  |  |  |
Allowance for Credit Loss on loans | 9,333,000 |  | 9,333,000 |  |
Total allowance for credit losses on off-balance sheet credit exposures | 268,000 |  | 268,000 |  |
Impact of ASU 2016-13 adoption | Impact of adoption ASU 2016-13 |  |  |  |  |
Loans receivable | 434,000 |  |  |  |
Impact of ASU 2016-13 adoption | Purchased credit deteriorated ("PCD") loans |  |  |  |  |
Increase to ACL | 434,000 |  |  |  |
Residential and commercial real estate loans | Purchased credit deteriorated ("PCD") loans | Impact of adoption ASU 2016-13 |  |  |  |  |
Loans receivable | 434,000 |  |  |  |
Residential Real Estate |  |  |  |  |
Allowance for Credit Loss on loans | 4,875,000 | 11,192,000 | 4,875,000 | 3,706,000 | 3,226,000
Total allowance for credit losses on off-balance sheet credit exposures |  | 37,000 | 19,000 |  |
Residential Real Estate | Cumulative Effect, Period of Adoption, Adjusted Balance |  |  |  |  |
Allowance for Credit Loss on loans | 8,396,000 |  |  |  |
Residential Real Estate | Impact of ASU 2016-13 adoption |  |  |  |  |
Allowance for Credit Loss on loans | 3,521,000 |  | 3,521,000 |  |
Total allowance for credit losses on off-balance sheet credit exposures |  |  | 35,000 |  |
Construction Real Estate |  |  |  |  |
Allowance for Credit Loss on loans | 2,010,000 | 2,170,000 | 2,010,000 | 1,365,000 | 1,097,000
Total allowance for credit losses on off-balance sheet credit exposures |  | 502,000 | 769,000 |  |
Construction Real Estate | Cumulative Effect, Period of Adoption, Adjusted Balance |  |  |  |  |
Allowance for Credit Loss on loans | 1,889,000 |  |  |  |
Construction Real Estate | Impact of ASU 2016-13 adoption |  |  |  |  |
Allowance for Credit Loss on loans | (121,000) |  | (121,000) |  |
Total allowance for credit losses on off-balance sheet credit exposures |  |  | (167,000) |  |
Commercial Real Estate |  |  |  |  |
Allowance for Credit Loss on loans | 12,132,000 | 14,535,000 | 12,132,000 | 9,399,000 | 8,793,000
Total allowance for credit losses on off-balance sheet credit exposures |  | 188,000 | 172,000 |  |
Commercial Real Estate | Cumulative Effect, Period of Adoption, Adjusted Balance |  |  |  |  |
Allowance for Credit Loss on loans | 15,988,000 |  |  |  |
Commercial Real Estate | Impact of ASU 2016-13 adoption |  |  |  |  |
Allowance for Credit Loss on loans | 3,856,000 |  | 3,856,000 |  |
Total allowance for credit losses on off-balance sheet credit exposures |  |  | 95,000 |  |
Consumer loans |  |  |  |  |
Allowance for Credit Loss on loans | 1,182,000 | 916,000 | 1,182,000 | 1,046,000 | 902,000
Total allowance for credit losses on off-balance sheet credit exposures |  | 218,000 | 153,000 |  |
Consumer loans | Cumulative Effect, Period of Adoption, Adjusted Balance |  |  |  |  |
Allowance for Credit Loss on loans | 2,247,000 |  |  |  |
Consumer loans | Impact of ASU 2016-13 adoption |  |  |  |  |
Allowance for Credit Loss on loans | 1,065,000 |  | 1,065,000 |  |
Total allowance for credit losses on off-balance sheet credit exposures |  |  | 197,000 |  |
Commercial loans |  |  |  |  |
Allowance for Credit Loss on loans | 4,940,000 | 4,409,000 | 4,940,000 | $ 4,387,000 | $ 4,196,000
Total allowance for credit losses on off-balance sheet credit exposures |  | $ 860,000 | 846,000 |  |
Commercial loans | Cumulative Effect, Period of Adoption, Adjusted Balance |  |  |  |  |
Allowance for Credit Loss on loans | 5,952,000 |  |  |  |
Commercial loans | Impact of ASU 2016-13 adoption |  |  |  |  |
Allowance for Credit Loss on loans | $ 1,012,000 |  | 1,012,000 |  |
Total allowance for credit losses on off-balance sheet credit exposures |  |  | $ 108,000 |  |

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