Loans and Allowance for Loan Losses (Credit Quality Indicator) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	$ 1,212,248,000	$ 1,177,035,000
Loans and Leases Receivable, Deferred Income	(3,600,000)	3,600,000
Servicing Assets, Unconsolidated Loans Serviced, Unpaid Principal Balance	190,200,000	65,100,000
Commercial and agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	72,252,000	79,704,000
Real estate - construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	64,083,000	58,414,000
Real estate - mortgage, 1-4 family residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	636,107,000	553,538,000
Real estate - mortgage, commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	394,924,000	441,836,000
Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	44,882,000	43,543,000
Substandard or Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans purchased in the Merger	40,500,000	60,600,000
Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	1,070,830,000	952,705,000
Pass [Member] | Commercial and agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	67,277,000	69,003,000
Pass [Member] | Real estate - construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	50,138,000	40,117,000
Pass [Member] | Real estate - mortgage, 1-4 family residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	601,304,000	504,819,000
Pass [Member] | Real estate - mortgage, commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	307,661,000	296,271,000
Pass [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	44,450,000	42,495,000
Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	45,884,000	71,786,000
Special Mention [Member] | Commercial and agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	1,262,000	3,447,000
Special Mention [Member] | Real estate - construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	3,984,000	2,031,000
Special Mention [Member] | Real estate - mortgage, 1-4 family residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	10,887,000	15,855,000
Special Mention [Member] | Real estate - mortgage, commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	29,711,000	50,275,000
Special Mention [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	40,000	178,000
Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	95,189,000	151,396,000
Substandard [Member] | Commercial and agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	3,713,000	6,953,000
Substandard [Member] | Real estate - construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	9,961,000	16,266,000
Substandard [Member] | Real estate - mortgage, 1-4 family residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	23,916,000	32,625,000
Substandard [Member] | Real estate - mortgage, commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	57,552,000	95,126,000
Substandard [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	47,000	426,000
Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	345,000	1,148,000
Doubtful [Member] | Commercial and agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	0	301,000
Doubtful [Member] | Real estate - construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	0	0
Doubtful [Member] | Real estate - mortgage, 1-4 family residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	0	239,000
Doubtful [Member] | Real estate - mortgage, commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	0	164,000
Doubtful [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	$ 345,000	$ 444,000