Loans - Information Relating to Loans (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
NET LOAN BALANCES	$ 1,821,885	$ 1,304,207
Construction and Land Development [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
NET LOAN BALANCES	87,036	67,450
Commercial real estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
NET LOAN BALANCES	837,147	520,382
Residential real estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
NET LOAN BALANCES	686,897	592,746
Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
NET LOAN BALANCES	512	280
Commercial and Financial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
NET LOAN BALANCES	157,396	78,636
Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
NET LOAN BALANCES	52,897	44,713
Portfolio Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
NET LOAN BALANCES	1,488,005	1,304,207
Portfolio Loans [Member] | Construction and Land Development [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
NET LOAN BALANCES	65,896	67,450
Portfolio Loans [Member] | Commercial real estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
NET LOAN BALANCES	610,863	520,382
Portfolio Loans [Member] | Residential real estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
NET LOAN BALANCES	639,428	592,746
Portfolio Loans [Member] | Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
NET LOAN BALANCES	512	280
Portfolio Loans [Member] | Commercial and Financial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
NET LOAN BALANCES	120,763	78,636
Portfolio Loans [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
NET LOAN BALANCES	50,543	44,713
Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
NET LOAN BALANCES	7,814	0
Purchased Credit Impaired Loans [Member] | Construction and Land Development [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
NET LOAN BALANCES	1,557	0
Purchased Credit Impaired Loans [Member] | Commercial real estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
NET LOAN BALANCES	4,092	0
Purchased Credit Impaired Loans [Member] | Residential real estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
NET LOAN BALANCES	851	0
Purchased Credit Impaired Loans [Member] | Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
NET LOAN BALANCES	0	0
Purchased Credit Impaired Loans [Member] | Commercial and Financial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
NET LOAN BALANCES	1,312	0
Purchased Credit Impaired Loans [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
NET LOAN BALANCES	2	0
Purchased Unimpaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
NET LOAN BALANCES	326,066	0
Purchased Unimpaired Loans [Member] | Construction and Land Development [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
NET LOAN BALANCES	19,583	0
Purchased Unimpaired Loans [Member] | Commercial real estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
NET LOAN BALANCES	222,192	0
Purchased Unimpaired Loans [Member] | Residential real estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
NET LOAN BALANCES	46,618	0
Purchased Unimpaired Loans [Member] | Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
NET LOAN BALANCES	0	0
Purchased Unimpaired Loans [Member] | Commercial and Financial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
NET LOAN BALANCES	35,321	0
Purchased Unimpaired Loans [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
NET LOAN BALANCES	$ 2,352	$ 0