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Investments (Investments Pledged as Collateral) (Details) $ in Millions | Mar. 31, 2021 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 | $ 26.0
Securities Pledged As Collateral | 317.2
Federal Home Loan Bank of Indianapolis [Member] |
Financial Instruments Owned and Pledged as Collateral [Line Items] |
Securities Pledged as Collateral on FHLB | 100.6
Federal Home Loan Bank of New York [Member] |
Financial Instruments Owned and Pledged as Collateral [Line Items] |
Securities Pledged as Collateral on FHLB | 190.6
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 | 21.0
Securities Pledged As Collateral | 21.0
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 | 5.0
Securities Pledged As Collateral | 5.0
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
Securities Pledged As Collateral | 249.2
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 | 93.7
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 | 155.5
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
Securities Pledged As Collateral | 42.0
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 | 6.9
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 | $ 35.1

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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 http://asc.fasb.org/extlink&oid=75038535&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 http://asc.fasb.org/extlink&oid=6479118&loc=d3e64650-112822 + Details
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- Definition Fair value of financial instrument held by the entity for its own account (proprietary securities) for trading or investment purposes that are carried at fair value and pledged to counterparties as collateral for financing transactions. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 30 -Section 50 -Paragraph 1A -Subparagraph (b)(1)(i) -URI http://asc.fasb.org/extlink&oid=109249958&loc=SL6224234-111729 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66007379&loc=d3e113888-111728 + Details
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