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Cash and Due from Banks and Interest Bearing Deposits (Details) - USD ($) $ in Millions | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | ---
Cash and Cash Equivalents [Line Items] |  |
Balance requirements | $ 74.1 | $ 69.4
Federal Reserve [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Cash accounts which exceeded federally insured limits | 93.4 |
Fifth Third Bank [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Cash accounts which exceeded federally insured limits | 23.3 |
Federal Home Loan Bank [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Cash accounts which exceeded federally insured limits | $ 2.2 |

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- Definition Amount of cash subject to withdrawal restrictions, restricted deposits held as compensating balances, and cash and securities segregated in compliance with regulations (such as cash deposited in a special reserve account for the exclusive benefit of customers). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 305 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6478312&loc=d3e61473-112792 + Details
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