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FHLB Advances, Other Borrowings and Junior Subordinated Notes Subordinated notes payable and junior subordinated notes payable (Details) (USD $)
 0 Months Ended 12 Months Ended 12 Months Ended 0 Months Ended 12 Months Ended
Jan. 17, 2014
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2008
Mar. 07, 2014
Subordinated debt - third party financial institution
Dec. 31, 2013
Subordinated debt - third party financial institution
Dec. 31, 2011
Subordinated debt - third party financial institution
Dec. 31, 2013
Subordinated debt - private placement
Dec. 31, 2013
Junior subordinated notes
Dec. 31, 2013
Subordinated debt - private placement
Mar. 07, 2014
Subordinated notes payable
Dec. 31, 2013
Subordinated notes payable
Dec. 31, 2012
Subordinated notes payable
Dec. 31, 2013
London Interbank Offered Rate (LIBOR)
Subordinated debt - third party financial institution
Dec. 31, 2013
Interest rate floor debt
Subordinated debt - third party financial institution
Subordinated Borrowing [Line Items]                              
Borrowed funds   $ 22,251,000 $ 22,720,000               $ 7,900,000 $ 11,926,000 $ 11,926,000    
Subordinated notes payable         1,700,000 5,700,000 39,000,000 6,200,000              
Debt instrument, basis spread on variable rate                           4.75%  
Interest rate floor                             6.00%
Subordinated debt, fixed interest rate                   7.50%          
Repayment of subordinated notes payable 4,000,000 0 33,289,000                        
Junior subordinated notes   10,315,000 10,315,000           10,315,000            
Junior subordinated notes fixed rate                 10.50%            
Debt issuance cost       428,000                      
Debt issuance costs, unamortized   $ 353,000