Fair Value - Level 3 Measurements for Instruments Measured on a Non-Recurring Basis (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2016	Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	$ 3,978	$ 6,093
Other real estate owned, net	5,541	8,401
Fair Value, Measurements, Nonrecurring | Commercial | Line of credit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	114
Fair Value, Measurements, Nonrecurring | Commercial RE | Owner occupied
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	139
Fair Value, Measurements, Nonrecurring | Commercial RE | Non-owner occupied
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned, net	1,301	468
Fair Value, Measurements, Nonrecurring | 1-4 Family Residential | Senior Lien
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	131	572
Other real estate owned, net	167	131
Fair Value, Measurements, Nonrecurring | Construction, Land & Development
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned, net	2,765	1,140
Level 3 | Fair Value, Measurements, Nonrecurring | Commercial | Line of credit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	$ 114
Level 3 | Fair Value, Measurements, Nonrecurring | Commercial | Line of credit | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Weighted Average)	20.00%
Level 3 | Fair Value, Measurements, Nonrecurring | Commercial | Line of credit | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Weighted Average)	100.00%
Level 3 | Fair Value, Measurements, Nonrecurring | Commercial | Line of credit | Weighted Average
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Weighted Average)	78.00%
Level 3 | Fair Value, Measurements, Nonrecurring | Commercial RE | Owner occupied
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	$ 139
Level 3 | Fair Value, Measurements, Nonrecurring | Commercial RE | Owner occupied | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Weighted Average)	10.00%
Level 3 | Fair Value, Measurements, Nonrecurring | Commercial RE | Owner occupied | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Weighted Average)	55.00%
Level 3 | Fair Value, Measurements, Nonrecurring | Commercial RE | Owner occupied | Weighted Average
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Weighted Average)	41.00%
Level 3 | Fair Value, Measurements, Nonrecurring | Commercial RE | Non-owner occupied
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned, net	$ 1,301	$ 468
Level 3 | Fair Value, Measurements, Nonrecurring | Commercial RE | Non-owner occupied | OREO property | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Weighted Average)	5.00%	5.00%
Level 3 | Fair Value, Measurements, Nonrecurring | Commercial RE | Non-owner occupied | OREO property | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Weighted Average)	50.00%	50.00%
Level 3 | Fair Value, Measurements, Nonrecurring | Commercial RE | Non-owner occupied | OREO property | Weighted Average
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Weighted Average)	18.00%	16.00%
Level 3 | Fair Value, Measurements, Nonrecurring | 1-4 Family Residential | Senior Lien
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	$ 131	$ 572
Other real estate owned, net	$ 167	$ 131
Level 3 | Fair Value, Measurements, Nonrecurring | 1-4 Family Residential | Senior Lien | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Weighted Average)	10.00%
Level 3 | Fair Value, Measurements, Nonrecurring | 1-4 Family Residential | Senior Lien | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Weighted Average)	60.00%
Level 3 | Fair Value, Measurements, Nonrecurring | 1-4 Family Residential | Senior Lien | Weighted Average
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Weighted Average)	54.00%
Level 3 | Fair Value, Measurements, Nonrecurring | 1-4 Family Residential | Senior Lien | Loans receivable | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Weighted Average)		10.00%
Level 3 | Fair Value, Measurements, Nonrecurring | 1-4 Family Residential | Senior Lien | Loans receivable | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Weighted Average)		60.00%
Level 3 | Fair Value, Measurements, Nonrecurring | 1-4 Family Residential | Senior Lien | Loans receivable | Weighted Average
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Weighted Average)		17.00%
Level 3 | Fair Value, Measurements, Nonrecurring | 1-4 Family Residential | Senior Lien | OREO property | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Weighted Average)	6.00%	6.00%
Level 3 | Fair Value, Measurements, Nonrecurring | 1-4 Family Residential | Senior Lien | OREO property | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Weighted Average)	55.00%	55.00%
Level 3 | Fair Value, Measurements, Nonrecurring | 1-4 Family Residential | Senior Lien | OREO property | Weighted Average
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Weighted Average)	54.00%	30.00%
Level 3 | Fair Value, Measurements, Nonrecurring | Construction, Land & Development
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned, net	$ 2,765	$ 1,140
Level 3 | Fair Value, Measurements, Nonrecurring | Construction, Land & Development | OREO property | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Weighted Average)	5.00%	5.00%
Level 3 | Fair Value, Measurements, Nonrecurring | Construction, Land & Development | OREO property | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Weighted Average)	70.00%	70.00%
Level 3 | Fair Value, Measurements, Nonrecurring | Construction, Land & Development | OREO property | Weighted Average
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Weighted Average)	35.00%	27.00%