Loans and Allowance for Loan Losses (Troubled Debt Restructuring) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2015 USD ($) loans	Dec. 31, 2014 USD ($) loans	Dec. 31, 2013 USD ($) loans
Financing Receivable, Modifications [Line Items]
Number of Loans | loans	12	25	19
Pre-Modified Outstanding Recorded Investment	$ 2,131	$ 6,398	$ 9,043
Post-Modified Outstanding Recorded Investment	$ 2,131	$ 6,390	$ 8,814
Commercial and agricultural [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | loans	0	2	0
Pre-Modified Outstanding Recorded Investment	$ 0	$ 94	$ 0
Post-Modified Outstanding Recorded Investment	$ 0	$ 94	$ 0
Real estate - construction [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | loans	3	4	2
Pre-Modified Outstanding Recorded Investment	$ 649	$ 1,607	$ 125
Post-Modified Outstanding Recorded Investment	$ 649	$ 1,607	$ 125
Real estate - mortgage, 1-4 family residential [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | loans	5	11	12
Pre-Modified Outstanding Recorded Investment	$ 754	$ 1,227	$ 3,387
Post-Modified Outstanding Recorded Investment	$ 754	$ 1,303	$ 3,451
Real estate - mortgage, Commercial [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | loans	4	8	5
Pre-Modified Outstanding Recorded Investment	$ 728	$ 3,470	$ 5,531
Post-Modified Outstanding Recorded Investment	$ 728	$ 3,386	$ 5,238
Consumer [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | loans	0	0	0
Pre-Modified Outstanding Recorded Investment	$ 0	$ 0	$ 0
Post-Modified Outstanding Recorded Investment	$ 0	$ 0	$ 0