Cash and Due from Banks and Interest Bearing Deposits (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Cash and Cash Equivalents [Line Items]
Balance requirements	$ 69.4	$ 64.5
Federal Reserve [Member]
Cash and Cash Equivalents [Line Items]
Cash accounts which exceeded federally insured limits	130.6
Fifth Third Bank [Member]
Cash and Cash Equivalents [Line Items]
Cash accounts which exceeded federally insured limits	22.4
Federal Home Loan Bank [Member]
Cash and Cash Equivalents [Line Items]
Cash accounts which exceeded federally insured limits	$ 4.2