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BORROWED FUNDS - Subordinated Debt (Details) - USD ($)
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Jun. 30, 2014
Mar. 31, 2007
Subordinated Debentures          
Balance at end of year $ 33,524,000 $ 33,524,000      
Interest expense on borrowed funds $ 2,204,000 1,142,000 $ 79,000    
Interest rate on debt security (as a percent) 7.00%        
Subordinated Debt          
Balance at end of year $ 33,524,000 33,524,000      
Convertible Subordinated Promissory Notes Due 2024          
Subordinated Debentures          
Debt Instrument Period From Issuance That Issuer May Prepay Debt 5 years        
Subordinated Debt          
Subordinated Debentures          
Face amount of debt issued         $ 4,000,000
Variable rate basis spread (as a percent) 1.62%        
Debt instrument interest rate description three month LIBOR Rate        
Balance at end of year $ 33,524,000 33,524,000 4,124,000    
Interest expense on borrowed funds 2,200,000 1,100,000 79,000    
Subordinated Debt          
Balance at end of year 33,524,000 33,524,000 4,124,000    
Average balance during the year 33,524,000 19,361,000 4,124,000    
Maximum month-end balance $ 33,524,000 $ 33,524,000 $ 4,124,000    
Weighted-average rate during the year 6.55% 6.01% 1.92%    
Weighted-average rate end of period 6.57% 6.53% 1.94%    
Subordinated Debt | Convertible Subordinated Promissory Notes Due 2024          
Subordinated Debentures          
Face amount of debt issued       $ 29,400,000  
Debt Instrument Face Amount Of Incremental Issue       100,000  
Debt Instrument Minimum Investment Required       $ 1,000,000  
Term of debt instrument 10 years        
Debt Instrument Convertible Threshold Consecutive Trading Days After First Second Third Fourth And Fifth Anniversaries Of Issuance Or Prepayment Notice 30 days        
Debt Instrument, Convertible, Conversion Price $ 16        
Debt Instrument Convertible Notice Period Of Intent To Prepay 20 days        
Debt Instrument Threshold Amount Of New Senior Debt Issuance That Issuer Must Obtain Holder Consent $ 15,000,000        
Debt Instrument, Redemption Price, Percentage 100.00%        
Debt Instrument Redemption Period From Issuance 5 years        
Subordinated Debt | Convertible Subordinated Promissory Notes Due 2024 | LIBOR          
Subordinated Debentures          
Debt Instrument Basis Spread On Variable Rate After Fifth Anniversary 5.00%        
Debt Instrument Maximum Interest Rate Stated Percentage After Fifth Anniversary 9.00%        
Subordinated Debt | Convertible Subordinated Promissory Notes Due 2024 | Debtholder Investments Less Than Three Million Dollars [Member]          
Subordinated Debentures          
Debt Instrument Investment Amount Of Holder $ 3,000,000        
Debt Instrument Minimum Ownership Of Common Stock As Percentage Of Principal Acquired 30.00%        
Subordinated Debt | Convertible Subordinated Promissory Notes Due 2024 | Debtholder Investments Of Three Million Dollars Or Greater [Member]          
Subordinated Debentures          
Debt Instrument Investment Amount Of Holder $ 3,000,000        
Debt Instrument Minimum Ownership Of Common Stock As Percentage Of Principal Acquired 30.00%        
Interest rate on debt security (as a percent) 7.50%        
Subordinated Debt | Convertible Subordinated Promissory Notes Due 2024 | Debtholder Investments Of Ten Million Dollars Or Greater [Member]          
Subordinated Debentures          
Debt Instrument Investment Amount Of Holder $ 10,000,000        
Interest rate on debt security (as a percent) 7.00%