Loans And The Allowance For Credit Losses (Recorded Investment Of Loans, Including Nonaccrual And Restructured Loans, By Class) (Details) - USD ($)	Jun. 30, 2015	Dec. 31, 2014
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 1,084,000	$ 933,000
Current	1,202,571,000	1,181,401,000
Financing receivables, Totals	1,203,655,000	1,182,334,000
91 Days more past due and Accruing	0
91 Days or More Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	471,000	470,000
61 to 90 Days Part Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	242,000	22,000
31 to 60 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	371,000	441,000
Commercial, Financial And Agricultural [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	144,000	49,000
Current	210,314,000	177,548,000
Financing receivables, Totals	210,458,000	177,597,000
Commercial, Financial And Agricultural [Member] | 61 to 90 Days Part Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	94,000
Commercial, Financial And Agricultural [Member] | 31 to 60 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	50,000	49,000
Municipal Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	59,035,000	94,366,000
Financing receivables, Totals	59,035,000	94,366,000
Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables, Totals	454,114,000	469,529,000
Residential [Member] | First Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	814,000	549,000
Current	418,393,000	431,191,000
Financing receivables, Totals	419,207,000	431,739,000
Residential [Member] | First Mortgage [Member] | 91 Days or More Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	392,000	391,000
Residential [Member] | First Mortgage [Member] | 61 to 90 Days Part Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	148,000
Residential [Member] | First Mortgage [Member] | 31 to 60 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	274,000	157,000
Residential [Member] | Second Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	79,000	112,000
Current	34,828,000	36,678,000
Financing receivables, Totals	34,907,000	37,790,000
Residential [Member] | Second Mortgage [Member] | 91 Days or More Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	79,000	79,000
Residential [Member] | Second Mortgage [Member] | 31 to 60 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		33,000
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables, Totals	438,622,000	412,447,000
Commercial Real Estate [Member] | Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		22,000
Current	183,472,000	260,075,000
Financing receivables, Totals	183,472,000	260,097,000
Commercial Real Estate [Member] | Owner Occupied [Member] | 61 to 90 Days Part Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		22,000
Commercial Real Estate [Member] | Non-Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	47,000	202,000
Current	255,103,000	152,148,000
Financing receivables, Totals	255,150,000	152,350,000
Commercial Real Estate [Member] | Non-Owner Occupied [Member] | 31 to 60 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	47,000	202,000
Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables, Totals	38,435,000	23,858,000
Construction [Member] | Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	2,750,000	4,131,000
Financing receivables, Totals	2,750,000	4,131,000
Construction [Member] | Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	35,685,000	19,727,000
Financing receivables, Totals	35,685,000	19,727,000
Installment Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	2,950,000	4,504,000
Financing receivables, Totals	2,950,000	4,504,000
All Other Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	41,000	33,000
Financing receivables, Totals	$ 41,000	$ 33,000