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ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Tables) | 3 Months Ended
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Mar. 31, 2016
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] |
Schedule of components of other comprehensive income (loss) | The following tables present the components of other comprehensive income for the three months ended March 31, 2016 and 2015, by component:
(dollars in thousands) | Before Tax |  | Tax Effect |  | Net of Tax
Three Months Ended March 31, 2016 |  |  |  |  |  |  |  |
Net unrealized gains on investment securities: |  |  |  |  |  |  |  |
Net unrealized gains arising during the period | $ | 19,683 |  |  | $ | 7,830 |  |  | $ | 11,853 |
Less: Reclassification adjustment for gains realized in net income | — |  |  | — |  |  | — |
Net unrealized gains on investment securities | 19,683 |  |  | 7,830 |  |  | 11,853 |
Defined benefit plans: |  |  |  |  |  |  |  |
Amortization of net actuarial losses | 367 |  |  | 124 |  |  | 243 |
Amortization of net transition obligation | 4 |  |  | 1 |  |  | 3 |
Amortization of prior service cost | 5 |  |  | 1 |  |  | 4 |
Defined benefit plans, net | 376 |  |  | 126 |  |  | 250 |
Other comprehensive income | $ | 20,059 |  |  | $ | 7,956 |  |  | $ | 12,103 |
(dollars in thousands) | Before Tax |  | Tax Effect |  | Net of Tax
Three Months Ended March 31, 2015 |  |  |  |  |  |  |  |
Net unrealized gains on investment securities: |  |  |  |  |  |  |  |
Net unrealized gains arising during the period | $ | 11,476 |  |  | $ | 4,567 |  |  | $ | 6,909 |
Less: Reclassification adjustment for gains realized in net income | — |  |  | — |  |  | — |
Net unrealized gains on investment securities | 11,476 |  |  | 4,567 |  |  | 6,909 |
Defined benefit plans: |  |  |  |  |  |  |  |
Amortization of net actuarial losses | 420 |  |  | 165 |  |  | 255 |
Amortization of net transition obligation | 4 |  |  | 2 |  |  | 2 |
Amortization of prior service cost | 5 |  |  | 2 |  |  | 3 |
Defined benefit plans, net | 429 |  |  | 169 |  |  | 260 |
Other comprehensive income | $ | 11,905 |  |  | $ | 4,736 |  |  | $ | 7,169 |
Schedule of changes in each component of AOCI, net of tax | The following tables present the changes in each component of AOCI, net of tax, for the three months ended March 31, 2016 and 2015:
(dollars in thousands) | Investment Securities |  | Defined Benefit Plans |  | Accumulated Other Comprehensive Income
Three Months Ended March 31, 2016 |  |  |  |  |  |  |  |
Balance at beginning of period | $ | 9,181 |  |  | $ | (8,978 | ) |  | $ | 203 |
Other comprehensive income before reclassifications | 11,853 |  |  | — |  |  | 11,853 |
Amounts reclassified from AOCI | — |  |  | 250 |  |  | 250 |
Total other comprehensive income | 11,853 |  |  | 250 |  |  | 12,103 |
Balance at end of period | $ | 21,034 |  |  | $ | (8,728 | ) |  | $ | 12,306 |
(dollars in thousands) | Investment Securities |  | Defined Benefit Plans |  | Accumulated Other Comprehensive Income
Three Months Ended March 31, 2015 |  |  |  |  |  |  |  |
Balance at beginning of period | $ | 13,586 |  |  | $ | (10,427 | ) |  | $ | 3,159 |
Other comprehensive income before reclassifications | 6,909 |  |  | — |  |  | 6,909 |
Amounts reclassified from AOCI | — |  |  | 260 |  |  | 260 |
Total other comprehensive income | 6,909 |  |  | 260 |  |  | 7,169 |
Balance at end of period | $ | 20,495 |  |  | $ | (10,167 | ) |  | $ | 10,328 |
Schedule of amounts reclassified out of each component of AOCI | The following table presents the amounts reclassified out of each component of AOCI for the three months ended March 31, 2016 and 2015:
| Amount Reclassified from AOCI |  | Affected Line Item in the Statement Where Net Income is Presented
Details about AOCI Components | Three months ended March 31, |
(dollars in thousands) | 2016 |  | 2015 |
Amortization of defined benefit plan items |  |  |  |  |  |  |
Net actuarial losses | $ | (367 | ) |  | $ | (420 | ) |  | (1)
Net transition obligation | (4 | ) |  | (4 | ) |  | (1)
Prior service cost | (5 | ) |  | (5 | ) |  | (1)
| (376 | ) |  | (429 | ) |  | Total before tax
| 126 |  |  | 169 |  |  | Tax benefit
Total reclassifications for the period | $ | (250 | ) |  | $ | (260 | ) |  | Net of tax
(1) | These accumulated other comprehensive income components are included in the computation of net periodic pension cost (see Note 14 for additional details).

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- Definition Tabular disclosure of components of comprehensive income (loss). Includes, but is not limited to, foreign currency translation adjustments, foreign currency transactions designated as economic hedges of a net investment in foreign entity, gain (loss) and prior service cost (credit) for pension plans 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 1 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e526-108580 + Details
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