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Summary of Significant Accounting Policies (Details) $ in Thousands | Mar. 31, 2020 USD ($) branch | Sep. 30, 2019 USD ($)
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Accounting Policies [Abstract] |  |
Number of bank branches | branch | 234 |
Cash collateral | $ | $ 88,700 | $ 31,850

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- Definition Carrying amount as of the balance sheet date of cash collateral held for borrowed securities, for which the cash is restricted as to withdrawal or usage. + 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 210.9-03.1) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.(a),2) -URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910 + Details
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- Definition Number of bank branches where the Bank conducts its activities + References No definition available. + Details
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