Commitments, Contingencies, and Concentrations of Credit Risk (Details 1) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012
Ginnie Mae - mortgage-backed securities
Amortized cost, Available for sale and held to maturity	$ 83,950
Fair value, Available for sale and held to maturity	86,353
Small Business Administration
Amortized cost, Available for sale and held to maturity	55,034
Fair value, Available for sale and held to maturity	55,710
Federal Home Loan Bank System - bonds
Amortized cost, Available for sale and held to maturity	9,000
Fair value, Available for sale and held to maturity	9,088
Federal Home Loan Bank of Atlanta - common stock
Amortized cost, Available for sale and held to maturity	4,934
Fair value, Available for sale and held to maturity	4,934
Craven County, North Carolina municipal bond
Amortized cost, Available for sale and held to maturity	3,643
Fair value, Available for sale and held to maturity	4,029
First Citizens Bancorp (South Carolina) – bond / trust preferred securities
Amortized cost, Available for sale and held to maturity	3,998
Fair value, Available for sale and held to maturity	3,813
Fannie Mae - mortgage-backed securities and collateralized mortgage obligations
Amortized cost, Available for sale and held to maturity	3,701
Fair value, Available for sale and held to maturity	3,987
Spartanburg, South Carolina Sanitary Sewer District municipal bond
Amortized cost, Available for sale and held to maturity	3,293
Fair value, Available for sale and held to maturity	3,662
Richmond County, North Carolina municipal bond
Amortized cost, Available for sale and held to maturity	2,608
Fair value, Available for sale and held to maturity	2,860
Federal Farm Credit bonds
Amortized cost, Available for sale and held to maturity	2,500
Fair value, Available for sale and held to maturity	2,508
South Carolina State municipal bond
Amortized cost, Available for sale and held to maturity	2,133
Fair value, Available for sale and held to maturity	2,384
Virginia State Housing Authority municipal bond
Amortized cost, Available for sale and held to maturity	2,162
Fair value, Available for sale and held to maturity	$ 2,371