Loans (Details 1) (Parenthetical) - Receivables Acquired with Deteriorated Credit Quality $ in Thousands |
Dec. 31, 2015
USD ($)
|
|---|---|
| Financing Receivable Impaired [Line Items] | |
| Acquired with deteriorated credit quality, allowances | $ 0 |
| National Bancshares Corporation | |
| Financing Receivable Impaired [Line Items] | |
| Acquired with deteriorated credit quality, allowances | $ 31 |