TRANSACTIONS WITH RELATED PARTIES Related Parties Textual (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017		Dec. 31, 2016
Related Party Transaction [Line Items]
Loans and Leases Receivable, Related Parties, Additions	$ 14,862,000	$ 36,800,000	[1]
Related Party Transaction, Amounts of Transaction	31,300,000
Operating Leases, Rent Expense	9,700,000	8,600,000		$ 8,500,000
Related Party Deposit Liabilities	10,800,000	$ 18,300,000
Affiliated Entity [Member]
Related Party Transaction [Line Items]
Operating Leases, Rent Expense	$ 0			$ 0

[1] The 2017 amount includes $31.3 million of loans associated with a newly appointed director during the year, which represent the outstanding loan balances at the effective date of appointment.