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ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2014 | Sep. 30, 2013
Net unrealized gains (losses) on investment securities, Before Tax |  |  |  |
Net unrealized gains (losses) arising during the period | $ (2,562) | $ 5,476 | $ 29,323 | $ (38,924)
Less: Reclassification adjustment for gains/losses realized in net income |  |  | 1,071 |
Net unrealized gains on investment securities |  | 5,476 | 30,394 | (38,924)
Net unrealized gains on derivatives, Before Tax |  |  |  |
Reclassification adjustment for losses realized in net income |  |  |  | 394
Defined benefit plans, Before Tax |  |  |  |
Amortization of net actuarial losses | 305 | 617 | 915 | 1,851
Amortization of net transition obligation | 4 | 4 | 12 | 12
Amortization of prior service cost | 5 | 5 | 15 | 15
Defined benefit plans, net | 314 | 626 | 942 | 1,878
Other comprehensive income (loss) | (2,248) | 6,102 | 31,336 | (36,652)
Net unrealized gains (losses) on investment securities, Tax Effect |  |  |  |
Net unrealized gains (losses) arising during the period | (897) | 2,809 | 11,744 | (13,668)
Less: Reclassification adjustment for losses realized in net income |  |  | 429 |
Net unrealized gains on investment securities |  | 2,809 | 12,173 | (13,668)
Net unrealized gains on derivatives, Tax Effect |  |  |  |
Reclassification adjustment for losses realized in net income |  |  |  | (10,599)
Defined benefit plans, Tax Effect |  |  |  |
Amortization of net actuarial losses | 100 | 248 | 343 | 496
Amortization of net transition obligation | 1 | 1 | 5 | 3
Amortization of prior service cost | 1 | 2 | 5 | 4
Defined benefit plans, net | 102 | 251 | 353 | 503
Other comprehensive income (loss) | (795) | 3,060 | 12,526 | (23,764)
Net unrealized gains (losses) on investment securities, Net of Tax |  |  |  |
Net unrealized gains (losses) arising during the period | (1,665) | 2,667 | 17,579 | (25,256)
Less: Reclassification adjustment for losses realized in net income |  |  | 642 |
Net unrealized gains on investment securities | (1,665) | 2,667 | 18,221 | (25,256)
Net unrealized gains on derivatives, Net of Tax |  |  |  |
Reclassification adjustment for gains/losses realized in net income |  |  |  | 10,993
Defined benefit plans, Net of Tax |  |  |  |
Amortization of net actuarial losses | 205 | 369 | 572 | 1,355
Amortization of net transition obligation | 3 | 3 | 7 | 9
Amortization of prior service cost | 4 | 3 | 10 | 11
Defined benefit plans, net | 212 | 375 | 589 | 1,375
Other comprehensive income (loss), net of tax | $ (1,453) | $ 3,042 | $ 18,810 | $ (12,888)

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- Definition Amount before tax of reclassification adjustment from accumulated other comprehensive (income) loss for prior service cost (credit) related to pension and other postretirement benefit plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e637-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669646-108580 + Details
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