FHLB ADVANCES AND OTHER BORROWINGS (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Total FHLB advances and other borrowings	$ 250,353	$ 237,518
Federal Home Loan Bank Advances, Interest Rate Information
FHLB advances, collateral for mortgage and home equity line of credit loans	1,240,000	1,180,000
FHLB advances – fixed rate, fixed term, at rates averaging 0.0% and 0.93%, maturing through May 2023
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Total FHLB advances and other borrowings	$ 250,000	$ 237,500
Federal Home Loan Bank Advances, Interest Rate Information
Federal Home Loan Bank advances, interest rate	1.05%	0.89%
Obligations under capital leases – implicit interest rate of 1.70% – maturing through July 2018
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Total FHLB advances and other borrowings	$ 353	$ 18