COMMITMENTS, OFF-BALANCE SHEET RISKS AND CONTINGENCIES (Commitments To Make Loans And Open Ended Revolving Lines Of Credit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Commitments Off-Balance Sheet Risks and Contingencies [Line Items]
Fixed Rate	$ 67,051	$ 61,585
Variable Rate	1,674,094	1,462,624
Commercial Loan Lines Of Credit [Member]
Commitments Off-Balance Sheet Risks and Contingencies [Line Items]
Fixed Rate	63,625	53,998
Variable Rate	1,337,437	1,155,096
Commercial Letters Of Credit [Member]
Commitments Off-Balance Sheet Risks and Contingencies [Line Items]
Fixed Rate	0	0
Variable Rate	3,245	50
Standby Letters of Credit [Member]
Commitments Off-Balance Sheet Risks and Contingencies [Line Items]
Fixed Rate	0	0
Variable Rate	81,512	71,046
Real Estate Mortgage Loans [Member]
Commitments Off-Balance Sheet Risks and Contingencies [Line Items]
Fixed Rate	2,811	4,973
Variable Rate	2,881	5,722
Real Estate Construction Mortgage Loans [Member]
Commitments Off-Balance Sheet Risks and Contingencies [Line Items]
Fixed Rate	400	2,365
Variable Rate	2,189	6,042
Home Equity Mortgage Open Ended Revolving Lines [Member]
Commitments Off-Balance Sheet Risks and Contingencies [Line Items]
Fixed Rate	0	0
Variable Rate	232,362	212,776
Consumer Loan Open Ended Revolving Lines [Member]
Commitments Off-Balance Sheet Risks and Contingencies [Line Items]
Fixed Rate	215	249
Variable Rate	$ 14,468	$ 11,892