GOODWILL AND OTHER INTANGIBLE ASSETS (Carrying Amounts Of Goodwill) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Goodwill [Line Items]
Balance, beginning of period	$ 291,498	$ 291,498
Goodwill recorded during the year	9,300
Balance, end of period	300,798	291,498
Community Banking [Member]
Goodwill [Line Items]
Balance, beginning of period	217,618	217,618
Goodwill recorded during the year
Balance, end of period	217,618	217,618
Insurance Agencies [Member]
Goodwill [Line Items]
Balance, beginning of period	73,880	73,880
Goodwill recorded during the year	9,300
Balance, end of period	$ 83,180	$ 73,880