Loans and Asset Quality Information (Schedule of Impaired Loans) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015
Covered [Member]
Impaired loans
Impaired loans with no related allowance - Recorded Investment		$ 5,231
Impaired loans with no related allowance - Unpaid Principal Balance		8,529
Impaired loans with allowance - Recorded Investment		3,213
Impaired loans with allowance - Unpaid Principal Balance		3,476
Impaired loans with related allowance - Related Allowance		624
All Total Loans [Member]
Impaired loans
Impaired loans with no related allowance - Recorded Investment	$ 19,075	29,930
Impaired loans with no related allowance - Unpaid Principal Balance	23,354	39,484
Impaired loans with no related allowance - Average Recorded Investment	24,318	34,766
Impaired loans with allowance - Recorded Investment	13,665	23,749
Impaired loans with allowance - Unpaid Principal Balance	13,951	24,413
Impaired loans with related allowance - Related Allowance	1,640	3,311
Impaired loans with related allowance - Average Recorded Investment	19,645	23,723
All Total Loans [Member] \| Covered [Member]
Impaired loans
Impaired loans with no related allowance - Average Recorded Investment		5,607
Impaired loans with related allowance - Average Recorded Investment		3,742
All Total Loans [Member] \| Commercial, financial, and agricultural [Member]
Impaired loans
Impaired loans with no related allowance - Recorded Investment	593	360
Impaired loans with no related allowance - Unpaid Principal Balance	706	422
Impaired loans with no related allowance - Average Recorded Investment	816	235
Impaired loans with allowance - Recorded Investment	51	676
Impaired loans with allowance - Unpaid Principal Balance	51	709
Impaired loans with related allowance - Related Allowance	7	348
Impaired loans with related allowance - Average Recorded Investment	202	616
All Total Loans [Member] \| Real estate - construction, land development & other land loans [Member]
Impaired loans
Impaired loans with no related allowance - Recorded Investment	3,221	3,944
Impaired loans with no related allowance - Unpaid Principal Balance	4,558	7,421
Impaired loans with no related allowance - Average Recorded Investment	3,641	4,651
Impaired loans with allowance - Recorded Investment	780	954
Impaired loans with allowance - Unpaid Principal Balance	798	976
Impaired loans with related allowance - Related Allowance	184	241
Impaired loans with related allowance - Average Recorded Investment	844	1,980
All Total Loans [Member] \| Real estate - mortgage - residential (1-4 family) first mortgages [Member]
Impaired loans
Impaired loans with no related allowance - Recorded Investment	10,035	12,346
Impaired loans with no related allowance - Unpaid Principal Balance	12,220	14,644
Impaired loans with no related allowance - Average Recorded Investment	11,008	11,258
Impaired loans with allowance - Recorded Investment	10,772	15,285
Impaired loans with allowance - Unpaid Principal Balance	11,007	15,691
Impaired loans with related allowance - Related Allowance	1,339	1,912
Impaired loans with related allowance - Average Recorded Investment	13,314	15,636
All Total Loans [Member] \| Real estate - mortgage - home equity loans / lines of credit [Member]
Impaired loans
Impaired loans with no related allowance - Recorded Investment	114	121
Impaired loans with no related allowance - Unpaid Principal Balance	146	175
Impaired loans with no related allowance - Average Recorded Investment	139	505
Impaired loans with allowance - Recorded Investment	166	667
Impaired loans with allowance - Unpaid Principal Balance	166	678
Impaired loans with related allowance - Related Allowance	5	344
Impaired loans with related allowance - Average Recorded Investment	324	430
All Total Loans [Member] \| Real estate - mortgage - commercial and other [Member]
Impaired loans
Impaired loans with no related allowance - Recorded Investment	5,112	13,156
Impaired loans with no related allowance - Unpaid Principal Balance	5,722	16,818
Impaired loans with no related allowance - Average Recorded Investment	8,713	18,112
Impaired loans with allowance - Recorded Investment	1,896	6,094
Impaired loans with allowance - Unpaid Principal Balance	1,929	6,279
Impaired loans with related allowance - Related Allowance	105	421
Impaired loans with related allowance - Average Recorded Investment	4,912	4,950
All Total Loans [Member] \| Installment loans to individuals [Member]
Impaired loans
Impaired loans with no related allowance - Recorded Investment		3
Impaired loans with no related allowance - Unpaid Principal Balance	2	4
Impaired loans with no related allowance - Average Recorded Investment	1	5
Impaired loans with allowance - Recorded Investment		73
Impaired loans with allowance - Unpaid Principal Balance		80
Impaired loans with related allowance - Related Allowance		45
Impaired loans with related allowance - Average Recorded Investment	$ 49	$ 111

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- Definition

Amount of allowance for credit losses related to recorded investment.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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Amount of investment in impaired financing receivables for which there is no related allowance for credit losses.

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