Loans - Risk Category, Class of Loans and Recorded Investment (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Financing Receivable, Recorded Investment [Line Items]
Loans	$ 1,821,885	$ 1,304,207	[1]
Construction and Land Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	87,036	67,450	[1]
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	837,147	520,382	[1]
Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	686,897	592,746	[1]
Commercial and Financial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	157,396	78,636
Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	53,409	44,993
Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	1,739,894	1,224,242
Pass [Member] | Construction and Land Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	79,397	63,186
Pass [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	797,934	485,268
Pass [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	655,518	554,681
Pass [Member] | Commercial and Financial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	155,281	77,840
Pass [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	51,764	43,267
Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	15,653	8,899
Special Mention [Member] | Construction and Land Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	1,815	583
Special Mention [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	11,709	6,810
Special Mention [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	546	824
Special Mention [Member] | Commercial and Financial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	993	382
Special Mention [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	590	300
Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	20,201	18,257
Substandard [Member] | Construction and Land Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	1,685	0
Substandard [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	15,325	15,886
Substandard [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	1,733	1,670
Substandard [Member] | Commercial and Financial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	1,002	248
Substandard [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	456	453
Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Doubtful [Member] | Construction and Land Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Doubtful [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Doubtful [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Doubtful [Member] | Commercial and Financial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Doubtful [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Nonaccrual [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	21,140	27,672
Nonaccrual [Member] | Construction and Land Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	1,963	1,302
Nonaccrual [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	4,189	5,111
Nonaccrual [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	14,797	20,705
Nonaccrual [Member] | Commercial and Financial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	0	13
Nonaccrual [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	191	541
Pass-Troubled debt restructures [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	4,021	7,452
Pass-Troubled debt restructures [Member] | Construction and Land Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	1,672	1,838
Pass-Troubled debt restructures [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	2,332	5,584
Pass-Troubled debt restructures [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	17	30
Pass-Troubled debt restructures [Member] | Commercial and Financial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Pass-Troubled debt restructures [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Troubled debt restructures [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	20,976	17,685
Troubled debt restructures [Member] | Construction and Land Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	504	541
Troubled debt restructures [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	5,658	1,723
Troubled debt restructures [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	14,286	14,836
Troubled debt restructures [Member] | Commercial and Financial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	120	153
Troubled debt restructures [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	$ 408	$ 432

[1] All purchased loans disclosed were acquired in 2014 and were therefore not presented as part of this table.