Annual report pursuant to Section 13 and 15(d)

DEPOSITS (Summary of Deposits) (Details)

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DEPOSITS (Summary of Deposits) (Details) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Summary of Deposits [Line Items]    
Deposits, Total $ 4,223,888 $ 3,398,160
Noninterest Bearing Demand [Member]    
Summary of Deposits [Line Items]    
Deposits, Total 1,053,467 810,460
Interest Bearing Checking [Member]    
Summary of Deposits [Line Items]    
Deposits, Total 2,626,575 2,158,984
Savings [Member]    
Summary of Deposits [Line Items]    
Deposits, Total 41,403 29,125
Time deposits, $250,000 and under [Member]    
Summary of Deposits [Line Items]    
Deposits, Total 236,961 205,414
Time, over $250,000 [Member]    
Summary of Deposits [Line Items]    
Deposits, Total $ 265,482 $ 194,177