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Subordinated Debentures (Tables)
 12 Months Ended
Dec. 31, 2015
Debt Disclosure [Abstract]  
Schedule of summarizes activities for our subordinated debentures
The following table summarizes activities for our subordinated debentures for the periods indicated:
 
Year Ended December 31,
 
2015
 
2014
 
(dollars in thousands)
Average balance outstanding
$
70,310

 
$
30,858

Maximum amount outstanding at any month-end during the year
70,310

 
70,310

Balance outstanding at end of year
70,310

 
70,310

Weighted average interest rate during the year
5.36
%
 
5.00
%