Junior Subordinated Debt (Details) - USD ($) $ in Thousands |
9 Months Ended | |||
|---|---|---|---|---|
Sep. 30, 2011 |
Apr. 07, 2006 |
Sep. 30, 2016 |
Jul. 01, 2011 |
|
| Financial Instruments Subject to Mandatory Redemption by Settlement Terms [Line Items] | ||||
| Proceeds from issuance of trust preferred securities | $ 20,000 | |||
| Number of consecutive quarterly periods (up to 20 quarterly periods) | 5 years | |||
| Proceeds from issuance of common securities | $ 619 | |||
| Principal Amount | 20,619 | |||
| Mid Carolina Trust [Member] | ||||
| Financial Instruments Subject to Mandatory Redemption by Settlement Terms [Line Items] | ||||
| Principal Amount | $ 8,764 | |||
| Equity method investments | 264 | |||
| AMNB Trust I [Member] | ||||
| Financial Instruments Subject to Mandatory Redemption by Settlement Terms [Line Items] | ||||
| Equity method investments | $ 619 |