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Income Taxes - Narrative (Details) - Heritage Financial Group - USD ($) | Sep. 30, 2017 | Dec. 31, 2016 | Sep. 30, 2016 | Jul. 01, 2015
--- | --- | --- | --- | ---
Operating Loss Carryforwards [Line Items] |  |  |  |
Operating loss carryforwards, valuation allowance | $ 0 | $ 0 | $ 0 |
Federal |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Net operating loss carryfowards | 6,160,000 |  |  | $ 18,321,000
State |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Net operating loss carryfowards | $ 7,995,000 |  |  | $ 17,168,000

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