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Loans and Allowance for Credit Losses - Balance in the ACL and the recorded investment in loans (Details) - USD ($) | 12 Months Ended
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Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2020
Allowance for credit losses [Abstract] |  |  |
Balance, beginning of period | $ 33,222,000 | $ 25,139,000 | $ 19,903,000
Impact of CECL adoption |  | 9,333,000 |
Provision (benefit) charged to expense | (66,000) | (602,000) | 6,002,000
Losses charged off | (153,000) | (734,000) | (853,000)
Recoveries | 69,000 | 86,000 | 87,000
Negative PCL | (533,000) |  |
Residential Real Estate |  |  |
Allowance for credit losses [Abstract] |  |  |
Balance, beginning of period | 11,192,000 | 4,875,000 | 3,706,000
Impact of CECL adoption |  | 3,521,000 |
Provision (benefit) charged to expense | (2,238,000) | 2,973,000 | 1,529,000
Losses charged off | (72,000) | (180,000) | (379,000)
Recoveries | 3,000 | 3,000 | 19,000
Construction Real Estate |  |  |
Allowance for credit losses [Abstract] |  |  |
Balance, beginning of period | 2,170,000 | 2,010,000 | 1,365,000
Impact of CECL adoption |  | (121,000) |
Provision (benefit) charged to expense | 46,000 | 281,000 | 645,000
Commercial Real Estate |  |  |
Allowance for credit losses [Abstract] |  |  |
Balance, beginning of period | 14,535,000 | 12,132,000 | 9,399,000
Impact of CECL adoption |  | 3,856,000 |
Provision (benefit) charged to expense | 2,251,000 | (1,364,000) | 2,730,000
Losses charged off |  | (90,000) | (12,000)
Recoveries |  | 1,000 | 15,000
Consumer loans |  |  |
Allowance for credit losses [Abstract] |  |  |
Balance, beginning of period | 916,000 | 1,182,000 | 1,046,000
Impact of CECL adoption |  | 1,065,000 |
Provision (benefit) charged to expense | (205,000) | (1,232,000) | 300,000
Losses charged off | (65,000) | (146,000) | (189,000)
Recoveries | 64,000 | 47,000 | 25,000
Commercial loans |  |  |
Allowance for credit losses [Abstract] |  |  |
Balance, beginning of period | 4,409,000 | 4,940,000 | 4,387,000
Impact of CECL adoption |  | 1,012,000 |
Provision (benefit) charged to expense | 80,000 | (1,260,000) | 798,000
Losses charged off | (16,000) | (318,000) | (273,000)
Recoveries | $ 2,000 | $ 35,000 | $ 28,000

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- Definition Amount of expense related to loan loss not accounted for as debt securities, with evidence of deterioration of credit quality. + References No definition available. + Details
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- Definition Amount excluding accrued interest, of allowance for credit loss on financing receivable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446 + Details
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- Definition Amount of increase in allowance for credit loss on financing receivable from recovery. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI http://asc.fasb.org/extlink&oid=124267575&loc=SL82922352-210448 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(4) -URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 + Details
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