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ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2014 | Mar. 31, 2013
Net unrealized gains (losses) on investment securities, Before Tax |  |
Net unrealized gains (losses) arising during the period | $ 15,944 | $ (4,823)
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 | 616
Amortization of net transition obligation | 4 | 4
Amortization of prior service cost | 5 | 5
Defined benefit plans, net | 314 | 625
Other comprehensive income | 16,258 | (3,804)
Net unrealized gains (losses) on investment securities, Tax Effect |  |
Net unrealized gains (losses) arising during the period | 6,368 |
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 | 123 |
Amortization of net transition obligation | 2 |
Amortization of prior service cost | 2 |
Defined benefit plans, net | 127 |
Other comprehensive income | 6,495 | (10,599)
Net unrealized gains (losses) on investment securities, Net of Tax |  |
Net unrealized gains (losses) arising during the period | 9,576 | (4,823)
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 | 182 | 616
Amortization of net transition obligation | 2 | 4
Amortization of prior service cost | 3 | 5
Defined benefit plans, net | 187 | 625
Other comprehensive income, net of tax | $ 9,763 | $ 6,795

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