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Indebtedness Indebtedness (Details) $ in Millions | Mar. 31, 2018 USD ($)
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One Point Seventy Five Percent Borrowing From Federal Home Loan Bank Due March 20, 2018 [Member] |
Short-term Debt [Line Items] |
Federal Home Loan Bank Advances | $ 75
Federal Home Loan Bank, Advances, Interest Rate | 1.75%
One Point Ninety Eight Percent Borrowing From Federal Home Loan Bank Due April 18, 2018 [Member] |
Short-term Debt [Line Items] |
Federal Home Loan Bank Advances | $ 55
Federal Home Loan Bank, Advances, Interest Rate | 1.98%

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- Definition Amount of Federal Home Loan Bank (FHLBank) advances to member financial institutions. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Interest rate of advances made and reported by Federal Home Loan Bank (FHLBank). + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_ShortTermDebtLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
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X
- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |