Indebtedness Indebtedness (Details) - Zero Point Seventy Five Percent Borrowing From Federal Home Loan Bank Due March 21, 2017 [Member] $ in Millions	Jun. 30, 2017 USD ($)
Short-term Debt [Line Items]
Federal Home Loan Bank Advances	$ 64
Federal Home Loan Bank, Advances, Interest Rate	0.75%

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.

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