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SECURITIES (Details 4)
4 Months Ended 12 Months Ended
Apr. 30, 2014
USD ($)
security
Dec. 31, 2013
USD ($)
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Troubled Debt Restructurings        
Estimated fair value of new securities received from the security TDR exchange     $ 262,946,000 $ 181,378,000
Predecessor Company        
Troubled Debt Restructurings        
Available-for-sale securities, gross realized gain $ 2,500,000 $ 2,800,000    
Available-for-sale securities, gross realized losses 0 100,000    
Predecessor Company | Equity Investments, at Estimated Fair Value        
Troubled Debt Restructurings        
Estimated fair value of new securities received from the security TDR exchange $ 16,100,000      
Number of securities modified as TDRs in default within a twelve month period subsequent to their original restructuring | security 0      
Predecessor Company | Securities Available- For-Sale        
Troubled Debt Restructurings        
Modified amortized cost of security $ 24,100,000      
Securities Available- For-Sale | Predecessor Company        
Troubled Debt Restructurings        
Other-than-temporarily impaired loss $ 4,400,000 $ 19,500,000