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Other Expenses - Other Expenses Breakout (Details) - USD ($) $ in Millions | 3 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
Other Expenses [Abstract] |  |
Non-income taxes | $ 3.6 | $ 3.8
Insurance | 2.4 | 1.8
Employee related expenses | 2.2 | 1.9
Other direct business expenses | 1.5 | 1.6
Membership fees | 0.7 | 0.4
Director and public company expenses | 0.4 | 0.3
Office expenses | 0.4 | 0.3
Other expenses | 0.7 | 1.0
Total other expenses | $ 11.9 | $ 11.1

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- Definition Director And Public Company Expenses + References No definition available. + Details
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- Definition Employee Related Expenses + References No definition available. + Details
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- Definition Membership Expense + References No definition available. + Details
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- Definition Office Expenses + References No definition available. + Details
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- Definition Other Direct Business Expenses + References No definition available. + Details
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- Definition The expense in the period incurred with respect to protection provided by insurance entities against risks other than risks associated with production (which are allocated to cost of sales). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.4) -URI http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227 + Details
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- Definition Amount of expense classified as other. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.4,6) -URI http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.7) -URI http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263 + Details
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- References No definition available. + Details
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- Definition Amount of noninterest expense classified as other. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.14) -URI http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260 + Details
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- Definition All taxes not related to income of the entity or excise or sales taxes levied on the revenue of the entity that are not reported elsewhere. These taxes could include production, real estate, personal property, and pump tax. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(4)) -URI http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227 + Details
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