GOODWILL AND OTHER INTANGIBLE ASSETS (Carrying Amounts Of Goodwill) (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2017 USD ($)
Balance, beginning of period	$ 300,798
Goodwill recorded during the year
Balance, end of period	300,798
Banking Services Group [Member]
Balance, beginning of period	217,618
Goodwill recorded during the year
Balance, end of period	217,618
Insurance Agencies [Member]
Balance, beginning of period	83,180
Goodwill recorded during the year
Balance, end of period	$ 83,180