Impaired Loans and Allowance for Loan Losses - Modified Loans (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2015 USD ($) Number	Dec. 31, 2014 USD ($) Number
Financing Receivable, Modifications [Line Items]
Number of Contracts | Number	7	8
Pre-Modification Outstanding Recorded Investment	$ 2,176	$ 5,059
Post-Modification Outstanding Recorded Investment	2,076	4,684
Specific Reserve Recorded	0	0
Valuation Allowance Recorded	$ 100	$ 375
Construction and Land Development [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Number	2	1
Pre-Modification Outstanding Recorded Investment	$ 220	$ 72
Post-Modification Outstanding Recorded Investment	218	71
Specific Reserve Recorded	0	0
Valuation Allowance Recorded	$ 2	$ 1
Residential Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Number	1	6
Pre-Modification Outstanding Recorded Investment	$ 27	$ 687
Post-Modification Outstanding Recorded Investment	26	638
Specific Reserve Recorded	0	0
Valuation Allowance Recorded	$ 1	$ 49
Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Number	3	1
Pre-Modification Outstanding Recorded Investment	$ 1,881	$ 4,300
Post-Modification Outstanding Recorded Investment	1,787	3,975
Specific Reserve Recorded	0	0
Valuation Allowance Recorded	$ 94	$ 325
Consumer [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Number	1
Pre-Modification Outstanding Recorded Investment	$ 48
Post-Modification Outstanding Recorded Investment	45
Specific Reserve Recorded	0
Valuation Allowance Recorded	$ 3