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Fair Value Measurements - Unobservable (Level 3) inputs (Details) - Nonrecurring Measurements - Fair Value, Inputs, Level 3 - Foreclosed and repossessed assets - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
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Sep. 30, 2021 | Jun. 30, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair Value Measurements Nonrecurring Unobservable Inputs | $ 144 | $ 280
Third party appraisal |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair Value Measurements Nonrecurring Valuation Technique | Third party appraisal | Third party appraisal
Third party appraisal | Marketability discount |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair Value Measurements Nonrecurring Unobservable Inputs | Marketability discount | Marketability discount
Fair Value Measurements Nonrecurring Weighted Average Discount Applied | 24.4 | 37.1
Third party appraisal | Marketability discount | Minimum |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair Value Measurements Nonrecurring Range of discounts Applied | 8.00% | 7.20%
Third party appraisal | Marketability discount | Maximum |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair Value Measurements Nonrecurring Range of discounts Applied | 51.00% | 80.60%

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- Definition Description of uncertainty of fair value measurement from use of unobservable input, including, but not limited to, inter-relationships among inputs used in fair value measurement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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- Definition Description of the valuation processes in place for fair value measurements categorized within Level 3 of the fair value hierarchy. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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