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Loans Receivable and ALLL Text Tags (Details) $ in Thousands | 6 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Sep. 30, 2021 USD ($) | Sep. 30, 2020 | Mar. 31, 2021 USD ($) | Jun. 30, 2021 USD ($)
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |
Financing Receivable, Troubled Debt Restructuring | $ 7,400 |  | $ 7,500 |
Financing Receivable, Modifications, Number of Contracts | 0 | 0 |  |
Financing Receivable, Principal and Interest Deferred Payments | $ 4,100 |  | $ 73,800 |
Financing Receivable, Number of Principal and Interest Payment Deferrals | 7 |  | 73 |
Other Real Estate Owned | $ 60 |  | $ 60 |
Number of Real Estate Properties | 1 |  | 1 |
Number of Modified Loan Subsequently Defaulted | 0 | 0 |  |
Loans and Leases Receivable, Related Parties | $ 30 |  |  |
Loans and Leases Receivable, Related Parties, Proceeds | $ 30 |  |  |
Number of Loans Originated Under the Paycheck Protection Program | 420 |  |  |
Loans Originated Under the Paycheck Protection Program, Amount | $ 57,100 |  |  |
Financing Receivable, Principal and Interest Deferred Payments | $ 4,100 |  | $ 73,800 |
Financing Receivable, Number of Principal and Interest Payment Deferrals | 7 |  | 73 |
Financing Receivable, Held-for-Sale | $ 0 |  | $ 0 |
Nonperforming |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |
Financing Receivable, Troubled Debt Restructuring | 1,800 |  | 1,800 |
Performing |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |
Financing Receivable, Troubled Debt Restructuring | $ 5,600 |  | $ 5,800 |
Financing Receivable, Modifications, Number of Contracts | 5 |  | 5 |
Commercial Loan |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |
Financing Receivable, Principal and Interest Deferred Payments | $ 67,600 |  |  |
Financing Receivable, Number of Principal and Interest Payment Deferrals | 54 |  |  |
Financing Receivable, Principal and Interest Deferred Payments | $ 67,600 |  |  |
Financing Receivable, Number of Principal and Interest Payment Deferrals | 54 |  |  |
One-to-four family |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |
Financing Receivable, Principal and Interest Deferred Payments |  |  |  | $ 6,200
Financing Receivable, Number of Principal and Interest Payment Deferrals | 19 |  |  |
Financing Receivable, Principal and Interest Deferred Payments |  |  |  | $ 6,200
Financing Receivable, Number of Principal and Interest Payment Deferrals | 19 |  |  |

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- Definition Number of principal and interest payment deferrals on loans receivable related to loan modification programs offered to financial institution customers affected by COVID-19. + References No definition available. + Details
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- Definition The total amount of financing receivable which has deferred principal and interest payments due to loan modification programs offered to financial institution customers affected by COVID-19. + References No definition available. + Details
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- Definition Represents the aggregate dollar amount of loans that have been originated under the Paycheck Protection Program. + References No definition available. + Details
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- Definition Number of Loans Originated Under the Paycheck Protection Program + References No definition available. + Details
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- Definition Number of financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953676-111524 + Details
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- Definition Amount of financing receivable modified as troubled debt restructuring. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953676-111524 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=121585226&loc=d3e18845-111554 + Details
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- Definition Number of financing receivable contracts modified as troubled debt restructuring within previous 12 months, with subsequent payment default. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953682-111524 + Details
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- Definition For an unclassified balance sheet, reflects the carrying amount of unpaid loan amounts due from related parties at the balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7(e)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 + Details
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- Definition Amount of cash inflow from related parties which reduce the amount of loans and leases receivable due from related parties. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(7)(e)(1)(i)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3179-108585 + Details
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- Definition Amount, before valuation allowance, of financing receivable classified as held-for-sale. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=124259787&loc=d3e4428-111522 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 948 -SubTopic 310 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=124265262&loc=d3e48678-111004 + Details
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- Definition Carrying amount as of the balance sheet date of other real estate and foreclosed assets. Other real estate may include real estate investments, real estate loans that qualify as investments in real estate, and premises that are no longer used in operations may also be included in real estate owned. Foreclosed assets include all assets obtained in full or partial satisfaction of a debt arrangement through foreclosure proceedings. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.10(4)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 + Details
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