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ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Components of Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2015 | Sep. 30, 2014
Net unrealized gains/losses on investment securities, Before Tax |  |  |  |
Net unrealized gains (losses) arising during the period | $ 12,561 | $ (2,562) | $ 3,285 | $ 29,323
Less: Reclassification adjustment for gains (losses) realized in net income | 0 | 0 | 1,866 | 1,071
Net unrealized gains (losses) on investment securities | 12,561 | (2,562) | 5,151 | 30,394
Defined benefit plans, Before Tax |  |  |  |
Amortization of net actuarial losses | 419 | 305 | 1,260 | 915
Amortization of net transition obligation | 4 | 4 | 12 | 12
Amortization of prior service cost | 5 | 5 | 15 | 15
Defined benefit plans, net | 428 | 314 | 1,287 | 942
Other comprehensive income (loss) | 12,989 | (2,248) | 6,438 | 31,336
Net unrealized gains/losses on investment securities, Tax Effect |  |  |  |
Net unrealized gains (losses) arising during the period | 4,998 | (897) | 1,306 | 11,744
Less: Reclassification adjustment for gains (losses) realized in net income | 0 | 0 | 743 | 429
Net unrealized gains (losses) on investment securities | 4,998 | (897) | 2,049 | 12,173
Defined benefit plans, Tax Effect |  |  |  |
Amortization of net actuarial losses | 165 | 100 | 499 | 343
Amortization of net transition obligation | 2 | 1 | 7 | 5
Amortization of prior service cost | 2 | 1 | 6 | 5
Defined benefit plans, net | 169 | 102 | 512 | 353
Other comprehensive income | 5,167 | (795) | 2,561 | 12,526
Net unrealized gains/losses on investment securities, Net of Tax |  |  |  |
Net unrealized gains (losses) arising during the period | 7,563 | (1,665) | 1,979 | 17,579
Less: Reclassification adjustment for gains (losses) realized in net income | 0 | 0 | 1,123 | 642
Net unrealized gains (losses) on investment securities | 7,563 | (1,665) | 3,102 | 18,221
Defined benefit plans, Net of Tax |  |  |  |
Amortization of net actuarial losses | 254 | 205 | 761 | 572
Amortization of net transition obligation | 2 | 3 | 5 | 7
Amortization of prior service cost | 3 | 4 | 9 | 10
Defined benefit plans, net | 259 | 212 | 775 | 589
Total other comprehensive income (loss), net of tax | $ 7,822 | $ (1,453) | $ 3,877 | $ 18,810

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- Definition Amount before tax and reclassification adjustments of unrealized holding gain (loss) on available-for-sale securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669646-108580 Reference 2: 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 + Details
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- Definition Amount after tax, before reclassification adjustments, of unrealized holding gain (loss) on available-for-sale securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669646-108580 Reference 2: 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 + Details
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- Definition Amount of tax expense (benefit) before reclassification adjustments of unrealized holding gain (loss) on available-for-sale securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e640-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (e,f) -URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669646-108580 + Details
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