DEPOSITS (Details) - USD ($)
$ in Thousands
Dec. 31, 2016
May 17, 2016
Dec. 31, 2015
Deposit Liabilities      
Demand $ 872,709   $ 783,054
Savings 164,410   117,408
Time deposits, $250 and over 37,200   42,775
Total interest-bearing deposits 2,188,755   1,852,614
Total non interest-bearing deposits 971,937   634,863
Total deposits 3,160,692   2,487,477
Scheduled maturities of all time deposits, including brokered certificates of deposit      
2017 108,890    
2018 42,505    
2019 39,932    
2020 39,248    
2021 18,819    
Thereafter 23    
Time Deposits, Total $ 249,417    
Weighted Average Rate      
2017 0.40%    
2018 1.27%    
2019 1.78%    
2020 1.84%    
2021 1.65%    
Thereafter 1.68%    
Total 1.09%    
Cornerstone      
Deposit Liabilities      
Demand   $ 59,507  
Money market accounts   53,773  
Savings   12,352  
Individual retirement accounts   3,910  
Time deposits, $250 and over   3,397  
Other certificates of deposit   19,410  
Total interest-bearing deposits   152,349  
Total non interest-bearing deposits   52,908  
Total deposits   205,257  
Cornerstone      
Deposit Liabilities      
Demand   59,507  
Money market accounts   53,773  
Savings   12,352  
Individual retirement accounts   3,897  
Time deposits, $250 and over   3,385  
Other certificates of deposit   19,343  
Total interest-bearing deposits   152,257  
Total non interest-bearing deposits   52,908  
Total deposits   205,165  
Brokered Deposits      
Deposit Liabilities      
Money market accounts $ 360,597   200,126
Certificates of deposit 28,681   44,298
Individual Deposits      
Deposit Liabilities      
Money market accounts 541,622   501,059
Individual retirement accounts 42,642   36,016
Time deposits, $250 and over 37,200   42,775
Other certificates of deposit $ 140,894   $ 127,878
Fair Value Adjustments      
Deposit Liabilities      
Individual retirement accounts   13  
Time deposits, $250 and over   12  
Other certificates of deposit   67  
Total interest-bearing deposits   92  
Total deposits   $ 92