Fair Value - Assets and Liabilities Subject to Fair Value Adjustments (Impairment) on Non-Recurring Basis Carried on Balance Sheet by Caption and by Level within Hierarchy (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
OREO	$ 1,703	$ 1,591
Impaired collateral-dependent loans	2,878	6,331
Fair Value, Inputs, Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
OREO	1,703	1,591
Impaired collateral-dependent loans	$ 2,878	$ 6,331