Note 9 - Goodwill and Intangible Assets - Goodwill (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Goodwill balance $ 29,197 $ 29,240
Adjustments   (43)
Goodwill balance 63,317 29,197
Addition from Acquisition 34,120  
Community Capital Corporation [Member]    
Goodwill balance 622 622
Adjustments   0
Goodwill balance 622 622
Addition from Acquisition 0  
Citizens South Banking Corporation [Member]    
Goodwill balance 25,835 25,835
Adjustments   0
Goodwill balance 25,835 25,835
Addition from Acquisition 0  
Provident Community [Member]    
Goodwill balance 2,740 2,783
Adjustments   (43)
Goodwill balance 2,740 2,740
Addition from Acquisition 0  
First Capital Bancorp [Member]    
Goodwill balance 0 0
Adjustments   0
Goodwill balance 34,120 $ 0
Addition from Acquisition $ 34,120