Acquisitions & Divestitures - Narrative (Details) $ in Millions |
12 Months Ended | |||
|---|---|---|---|---|
|
Dec. 31, 2015
USD ($)
branch
|
Dec. 31, 2014
USD ($)
|
Dec. 31, 2013
USD ($)
|
Dec. 06, 2013
USD ($)
|
|
| Business Combinations [Abstract] | ||||
| Number of branches sold | branch | 2 | |||
| Sale of deposits as part of branch sale | $ 78.4 | |||
| Sale of cash and cash equivalents as part of branch sale | 0.4 | |||
| Sale of loans as part of branch sale | 7.6 | |||
| Sale of other assets as part of branch sale | $ 1.0 | |||
| Gain on sale of branches | $ 1.0 | |||
| Branches closed | branch | 2 | |||
| Lease abandonment expense | $ 0.1 | $ 0.4 | $ 0.5 | |
| Discontinued Operations, Disposed of by Means Other than Sale, Abandonment | ||||
| Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] | ||||
| Lease abandonment liability | $ 0.7 | |||