Business Combinations - Schedule of Purchased Performing Loans and Purchased Impaired Loans Acquired in Transfer -- BankGreenville Corporation (Details) - BankGreenville $ in Thousands	Jul. 31, 2013 USD ($)
Total
Business Acquisition
Purchased Performing	$ 38,223
PCI	9,607
Total Loans	47,830
Retail Consumer Loans | One-to-four family
Business Acquisition
Purchased Performing	8,274
PCI	1,392
Total Loans	9,666
Retail Consumer Loans | HELOCs - Originated
Business Acquisition
Purchased Performing	3,987
PCI	134
Total Loans	4,121
Retail Consumer Loans | Consumer
Business Acquisition
Purchased Performing	522
PCI	0
Total Loans	522
Commercial Loan | Commercial real estate
Business Acquisition
Purchased Performing	23,073
PCI	4,552
Total Loans	27,625
Commercial Loan | Construction and development
Business Acquisition
Purchased Performing	2,367
PCI	3,529
Total Loans	$ 5,896