Summary of Significant Accounting Policies (Long-Term Borrowings) (Details)	Dec. 31, 2017
Accounting Policies [Abstract]
Percentage of FHLB advances secured by first lien real estate residential loans	140.00%

Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Percentage Secured by First Lien Real Estate Residential Loans

No definition available.

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Balance Type:	na
Period Type:	instant