| **Purchase and Assumption (Tables)**                             | 12 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
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| **Business Acquisition [Line Items]**                            |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
| Acquired Loans Accounted With ASC 310 30                         | The following table presents loans acquired during the periods ending December 31, 2014 and 2013, for which it was probable at acquisition that all contractually required payments would not be collected:Community - 2014CFS - 2013Contractually required payments receivable at acquisition date$26,032$109,839Nonaccretable difference3,49822,679Expected cash flows at acquisition date22,53487,160Accretable difference2,2343,502Basis in loans at acquisition date$20,300$83,658                                                                                                                                                                                                                                                                                                                                                                                                                                                              |
| SCB Bank                                                         |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
| **Business Acquisition [Line Items]**                            |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
| Assets and Liabilities of SCB Recorded at Provisional Fair Value | The assets and liabilities of SCB Bank were recorded at the respective acquisition date provisional fair values, and identifiable intangible assets were recorded at provisional fair value.AssetsLiabilitiesCash and due from banks (1)$29,113 Deposits:Investment securities, available for sale18,896 Non-interest bearing$13,715Federal Home Loan Bank stock1,761 NOW accounts14,746Loans:  Savings and money market25,843Commercial51,042 Certificate of deposit71,605Residential mortgage11,181 Total Deposits125,909Installment31,570   Total Loans93,793 Federal Home Loan Bank advances10,286   Other liabilities804Premises1,516 Total Liabilities Assumed$136,999Core deposit intangible484   Other assets560 Net Gain on Acquisition$9,124Total Assets Purchased$146,123   (1)Includes $17,200,000 cash received from the FDIC. |
| Acquired Loans Accounted With ASC 310 30                         | In accordance with ASC 310-30 (formerly Statement of Position (“SOP”) 03-3 as of February 10, 2012, loans acquired during 2012 for which it was probable at acquisition that all contractually required payments would not be collected are as follows:   Preliminary estimate of contractually required principal and interest at acquisition$31,143Preliminary estimate of contractual cash flows not expected to be collected (nonaccretable differences)9,688Preliminary estimate of expected cash flows at acquisition21,455Preliminary estimate of interest component of expected cash flows (accretable discount)4,152Preliminary estimate of fair value of acquired loans accounted for under ASC 310-30$17,303                                                                                                                                                                                                             |

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| - Definition
Tabular disclosure of the reconciliation of contractual cash flows to the carrying amount relating to certain loans acquired in a transfer.
+ References
No definition available.
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| - Definition
Tabular disclosure of the amounts recognized as of the acquisition date for each major class of assets acquired and liabilities assumed. May include but not limited to the following: (a) acquired receivables; (b) contingencies recognized at the acquisition date; and (c) the fair value of noncontrolling interests in the acquiree.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=39739317&loc=d3e4845-128472
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