GOODWILL AND OTHER INTANGIBLE ASSETS (Identifiable Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 79,090		$ 79,090		$ 76,218
Accumulated Amortization	53,033		53,033		50,827
Total	1,148	722	2,206	1,465
Core Deposits [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	27,801		27,801		27,801
Accumulated Amortization	22,523		22,523		22,256
Total	130	144	267	301
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	49,639		49,639		46,967
Accumulated Amortization	30,068		30,068		28,329
Total	905	540	1,739	1,089
Non-Solicitation Intangibles [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,650		1,650		1,450
Accumulated Amortization	442		442		242
Total	113	38	200	75
Trade names [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 688		$ 688		$ 688