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Investments (Investments Pledged as Collateral) (Details) $ in Millions | Mar. 31, 2023 USD ($)
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Financial Instruments Owned and Pledged as Collateral [Line Items] |
Securities Pledged as Collateral On Deposit With Various State And Regulatory Agencies | $ 23.4
Security Owned and Pledged as Collateral, Fair Value | 127.1
Federal Home Loan Bank of Indianapolis [Member] |
Financial Instruments Owned and Pledged as Collateral [Line Items] |
Securities Pledged as Collateral on FHLB | 65.7
Federal Home Loan Bank of New York [Member] |
Financial Instruments Owned and Pledged as Collateral [Line Items] |
Securities Pledged as Collateral on FHLB | 38.0
U.S. Government and Government Agencies [Member] |
Financial Instruments Owned and Pledged as Collateral [Line Items] |
Securities Pledged as Collateral On Deposit With Various State And Regulatory Agencies | 19.9
Security Owned and Pledged as Collateral, Fair Value | 19.9
U.S. Government and Government Agencies [Member] | Federal Home Loan Bank of Indianapolis [Member] |
Financial Instruments Owned and Pledged as Collateral [Line Items] |
Securities Pledged as Collateral on FHLB | 0.0
U.S. Government and Government Agencies [Member] | Federal Home Loan Bank of New York [Member] |
Financial Instruments Owned and Pledged as Collateral [Line Items] |
Securities Pledged as Collateral on FHLB | 0.0
Obligations of States and Political Subdivisions [Member] |
Financial Instruments Owned and Pledged as Collateral [Line Items] |
Securities Pledged as Collateral On Deposit With Various State And Regulatory Agencies | 3.5
Security Owned and Pledged as Collateral, Fair Value | 3.5
Obligations of States and Political Subdivisions [Member] | Federal Home Loan Bank of Indianapolis [Member] |
Financial Instruments Owned and Pledged as Collateral [Line Items] |
Securities Pledged as Collateral on FHLB | 0.0
Obligations of States and Political Subdivisions [Member] | Federal Home Loan Bank of New York [Member] |
Financial Instruments Owned and Pledged as Collateral [Line Items] |
Securities Pledged as Collateral on FHLB | 0.0
Residential Mortgage Backed Securities [Member] |
Financial Instruments Owned and Pledged as Collateral [Line Items] |
Securities Pledged as Collateral On Deposit With Various State And Regulatory Agencies | 0.0
Security Owned and Pledged as Collateral, Fair Value | 89.6
Residential Mortgage Backed Securities [Member] | Federal Home Loan Bank of Indianapolis [Member] |
Financial Instruments Owned and Pledged as Collateral [Line Items] |
Securities Pledged as Collateral on FHLB | 61.2
Residential Mortgage Backed Securities [Member] | Federal Home Loan Bank of New York [Member] |
Financial Instruments Owned and Pledged as Collateral [Line Items] |
Securities Pledged as Collateral on FHLB | 28.4
Commercial Mortgage Backed Securities [Member] |
Financial Instruments Owned and Pledged as Collateral [Line Items] |
Securities Pledged as Collateral On Deposit With Various State And Regulatory Agencies | 0.0
Security Owned and Pledged as Collateral, Fair Value | 14.1
Commercial Mortgage Backed Securities [Member] | Federal Home Loan Bank of Indianapolis [Member] |
Financial Instruments Owned and Pledged as Collateral [Line Items] |
Securities Pledged as Collateral on FHLB | 4.5
Commercial Mortgage Backed Securities [Member] | Federal Home Loan Bank of New York [Member] |
Financial Instruments Owned and Pledged as Collateral [Line Items] |
Securities Pledged as Collateral on FHLB | $ 9.6

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- Definition Amount of the collateral pledged in support of federal home loan bank advances outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -Subparagraph (d) -URI https://asc.fasb.org/extlink&oid=123599511&loc=d3e64711-112823 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=6479118&loc=d3e64650-112822 + Details
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