GOODWILL AND IDENTIFIABLE INTANGIBLE ASSETS (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Finite-Lived Intangible Assets [Line Items]
Goodwill	$ 170,421	$ 150,391	$ 130,074	$ 129,617
Other Intangible Assets	12,221	11,753
Total goodwill and other intangible assets	182,642	162,144
Core deposit intangibles [Member]
Finite-Lived Intangible Assets [Line Items]
Other Intangible Assets	11,218	10,328
Other identifiable Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Other Intangible Assets	$ 1,003	$ 1,425