STOCKHOLDERS' EQUITY AND EARNINGS PER COMMON SHARE (Details 3) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Net unrealized gain (loss) arising during the period
Net of Tax	$ 10,805	$ (5,853)	$ 11
Less: reclassification adjustment for losses realized in net income
Net of Tax	4,831	(225)	1,895
Other Comprehensive Income
Before Tax	25,206	(9,122)	3,153
Tax Effect	(9,570)	3,044	(1,247)
Total other comprehensive income (loss)	15,636	(6,078)	1,906
Net unrealized holding gain on AFS securities:
Net unrealized gain (loss) arising during the period
Before Tax	25,769	(15,254)	5,861
Tax Effect	(9,791)	5,604	(2,246)
Net of Tax	15,978	(9,650)	3,615
Less: reclassification adjustment for losses realized in net income
Before Tax	(482)	(4,758)	(1,442)
Tax Effect	196	1,920	579
Net of Tax	(286)	(2,838)	(863)
Other Comprehensive Income
Before Tax	25,287	(20,012)	4,419
Tax Effect	(9,595)	7,524	(1,667)
Total other comprehensive income (loss)	15,692	(12,488)	2,752
Net loss on cash flow hedging derivatives
Net unrealized gain (loss) arising during the period
Before Tax	(6,403)	5,046	(5,653)
Tax Effect	2,608	(2,014)	2,129
Net of Tax	(3,795)	3,032	(3,524)
Less: reclassification adjustment for losses realized in net income
Before Tax	5,393	3,620	3,581
Tax Effect	(2,201)	(1,460)	(1,441)
Net of Tax	3,192	2,160	2,140
Other Comprehensive Income
Before Tax	(1,010)	8,666	(2,072)
Tax Effect	407	(3,474)	688
Total other comprehensive income (loss)	(603)	5,192	(1,384)
Net loss on terminated swap
Less: reclassification adjustment for losses realized in net income
Before Tax	3,237	942	942
Tax Effect	(1,312)	(489)	(324)
Net of Tax	1,925	453	618
Other Comprehensive Income
Before Tax	3,237	942	942
Tax Effect	(1,312)	(489)	(324)
Total other comprehensive income (loss)	1,925	453	618
Net unrealized holding loss on pension plans
Net unrealized gain (loss) arising during the period
Before Tax	(2,308)	1,282	(136)
Tax Effect	930	(517)	56
Net of Tax	(1,378)	765	(80)
Other Comprehensive Income
Before Tax	(2,308)	1,282	(136)
Tax Effect	930	(517)	56
Total other comprehensive income (loss)	$ (1,378)	$ 765	$ (80)