Annual report pursuant to Section 13 and 15(d)

PREMISES AND EQUIPMENT (Narrative) (Details)

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PREMISES AND EQUIPMENT (Narrative) (Details) - USD ($)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Property, Plant and Equipment [Line Items]      
Depreciation expense $ 13,600,000 $ 10,900,000 $ 9,800,000
Renewable lease period, maximum 20 years    
Rental expense $ 9,200,000 5,900,000 6,100,000
Building      
Property, Plant and Equipment [Line Items]      
Amortization 228,000 0 0
Leasehold Improvements      
Property, Plant and Equipment [Line Items]      
Amortization $ 130,000 $ 0 $ 0