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ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) | 9 Months Ended
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Sep. 30, 2017
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] |
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) | 15. ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) The following tables present the components of other comprehensive income for the three and nine months ended September 30, 2017 and 2016, by component:
(dollars in thousands) | Before Tax |  | Tax Effect |  | Net of Tax
Three Months Ended September 30, 2017 |  |  |  |  |  |  |  |
Net unrealized losses on investment securities: |  |  |  |  |  |  |  |
Net unrealized losses arising during the perio d | $ | (487 | ) |  | $ | (194 | ) |  | $ | (293 | )
Less: Reclassification adjustment for losses realized in net income | — |  |  | — |  |  | — |
Net unrealized losses on investment securitie s | (487 | ) |  | (194 | ) |  | (293 | )
Defined benefit plans: |  |  |  |  |  |  |  |
Amortization of net actuarial loss | 324 |  |  | 44 |  |  | 280 |
Amortization of net transition obligation | 4 |  |  | 2 |  |  | 2 |
Amortization of prior service cost | 5 |  |  | 2 |  |  | 3 |
Defined benefit plans, net | 333 |  |  | 48 |  |  | 285 |
Other comprehensive loss | $ | (154 | ) |  | $ | (146 | ) |  | $ | (8 | )
(dollars in thousands) | Before Tax |  | Tax Effect |  | Net of Tax
Three Months Ended September 30, 2016 |  |  |  |  |  |  |  |
Net unrealized losses on investment securities: |  |  |  |  |  |  |  |
Net unrealized losses arising during the period | $ | (3,390 | ) |  | $ | (1,348 | ) |  | $ | (2,042 | )
Less: Reclassification adjustment for losses realized in net income | — |  |  | — |  |  | — |
Net unrealized losses on investment securities | (3,390 | ) |  | (1,348 | ) |  | (2,042 | )
Defined benefit plans: |  |  |  |  |  |  |  |
Amortization of net actuarial loss | 366 |  |  | 123 |  |  | 243 |
Amortization of net transition obligation | 4 |  |  | 1 |  |  | 3 |
Amortization of prior service cost | 4 |  |  | 1 |  |  | 3 |
Defined benefit plans, net | 374 |  |  | 125 |  |  | 249 |
Other comprehensive loss | $ | (3,016 | ) |  | $ | (1,223 | ) |  | $ | (1,793 | )
(dollars in thousands) | Before Tax |  | Tax Effect |  | Net of Tax
Nine Months Ended September 30, 2017 |  |  |  |  |  |  |  |
Net unrealized gains on investment securities: |  |  |  |  |  |  |  |
Net unrealized gains arising during the period | $ | 6,042 |  |  | $ | 2,403 |  |  | $ | 3,639 |
Less: Reclassification adjustment for losses realized in net income | 1,640 |  |  | 653 |  |  | 987 |
Net unrealized gains on investment securities | 7,682 |  |  | 3,056 |  |  | 4,626 |
Defined benefit plans: |  |  |  |  |  |  |
Net actuarial losses arising during the period | (1,042 | ) |  | (415 | ) |  | (627 | )
Amortization of net actuarial loss | 971 |  |  | 331 |  |  | 640 |
Amortization of net transition obligation | 13 |  |  | 5 |  |  | 8 |
Amortization of prior service cost | 13 |  |  | 5 |  |  | 8 |
Settlement | 138 |  |  | 56 |  |  | 82 |
Defined benefit plans, net | 93 |  |  | (18 | ) |  | 111 |
Other comprehensive inco me | $ | 7,775 |  |  | $ | 3,038 |  |  | $ | 4,737 |
(dollars in thousands) | Before Tax |  | Tax Effect |  | Net of Tax
Nine Months Ended September 30, 2016 |  |  |  |  |  |  |  |
Net unrealized gains on investment securities: |  |  |  |  |  |  |  |
Net unrealized gains arising during the period | $ | 26,030 |  |  | $ | 10,353 |  |  | $ | 15,677 |
Less: Reclassification adjustment for losses realized in net income | — |  |  | — |  |  | — |
Net unrealized gains on investment securities | 26,030 |  |  | 10,353 |  |  | 15,677 |
Defined benefit plans: |  |  |  |  |  |  |  |
Net actuarial losses arising during the period | — |  |  | — |  |  | — |
Amortization of net actuarial loss | 1,099 |  |  | 371 |  |  | 728 |
Amortization of net transition obligation | 12 |  |  | 3 |  |  | 9 |
Amortization of prior service cost | 14 |  |  | 3 |  |  | 11 |
Defined benefit plans, net | 1,125 |  |  | 377 |  |  | 748 |
Other comprehensive inco me | $ | 27,155 |  |  | $ | 10,730 |  |  | $ | 16,425 |
The following tables present the changes in each component of accumulated other comprehensive income (loss) ("AOCI"), net of tax, for the three and nine months ended September 30, 2017 and 2016:
(dollars in thousands) | Investment Securities |  | Defined Benefit Plans |  | AOCI
Three Months Ended September 30, 2017 |  |  |  |  |  |  |  |
Balance at beginning of period | $ | 9,648 |  |  | $ | (6,424 | ) |  | $ | 3,224 |
Other comprehensive loss before reclassifications | (293 | ) |  | — |  |  | (293 | )
Amounts reclassified from AOCI | — |  |  | 285 |  |  | 285 |
Total other comprehensive income (loss) | (293 | ) |  | 285 |  |  | (8 | )
Balance at end of period | $ | 9,355 |  |  | $ | (6,139 | ) |  | $ | 3,216 |
(dollars in thousands) | Investment Securities |  | Defined Benefit Plans |  | AOCI
Three Months Ended September 30, 2016 |  |  |  |  |  |  |  |
Balance at beginning of period | $ | 26,900 |  |  | $ | (8,479 | ) |  | $ | 18,421 |
Other comprehensive income before reclassifications | (2,042 | ) |  | — |  |  | (2,042 | )
Amounts reclassified from AOCI | — |  |  | 249 |  |  | 249 |
Total other comprehensive income | (2,042 | ) |  | 249 |  |  | (1,793 | )
Balance at end of period | $ | 24,858 |  |  | $ | (8,230 | ) |  | $ | 16,628 |
(dollars in thousands) | Investment Securities |  | Defined Benefit Plans |  | AOCI
Nine Months Ended September 30, 2017 |  |  |  |  |  |  |  |
Balance at beginning of period | $ | 4,729 |  |  | $ | (6,250 | ) |  | $ | (1,521 | )
Other comprehensive loss before reclassifications | 3,639 |  |  | (627 | ) |  | 3,012 |
Amounts reclassified from AOCI | 987 |  |  | 738 |  |  | 1,725 |
Total other comprehensive income | 4,626 |  |  | 111 |  |  | 4,737 |
Balance at end of period | $ | 9,355 |  |  | $ | (6,139 | ) |  | $ | 3,216 |
(dollars in thousands) | Investment Securities |  | Defined Benefit Plans |  | AOCI
Nine Months Ended September 30, 2016 |  |  |  |  |  |  |  |
Balance at beginning of period | $ | 9,181 |  |  | $ | (8,978 | ) |  | $ | 203 |
Other comprehensive income before reclassifications | 15,677 |  |  | — |  |  | 15,677 |
Amounts reclassified from AOCI | — |  |  | 748 |  |  | 748 |
Total other comprehensive income | 15,677 |  |  | 748 |  |  | 16,425 |
Balance at end of period | $ | 24,858 |  |  | $ | (8,230 | ) |  | $ | 16,628 |
The following table presents the amounts reclassified out of each component of AOCI for the three and nine months ended September 30, 2017 and 2016:
| Amount Reclassified from AOCI |  | Affected Line Item in the Statement Where Net Income is Presented
Details about AOCI Components | Three months ended September 30, |
(dollars in thousands) | 2017 |  | 2016 |
Amortization of defined benefit retirement and supplemental executive retirement plan items |  |  |  |  |  |  |
Net actuarial loss | $ | (324 | ) |  | $ | (366 | ) |  | (1)
Net transition obligation | (4 | ) |  | (4 | ) |  | (1)
Prior service cost | (5 | ) |  | (4 | ) |  | (1)
Settlement | — |  |  | — |  |  | (1)
| (333 | ) |  | (374 | ) |  | Total before tax
| 48 |  |  | 125 |  |  | Tax benefit
| $ | (285 | ) |  | $ | (249 | ) |  | Net of tax
Total reclassifications for the period | $ | (285 | ) |  | $ | (249 | ) |  | Net of tax
| Amount Reclassified from AOCI |  | Affected Line Item in the Statement Where Net Income is Presented
Details about AOCI Components | Nine months ended September 30, |
(dollars in thousands) | 2017 |  | 2016 |
Sale of investment securities available for sale | $ | (1,640 | ) |  | $ | — |  |  | Investment securities losses
| 653 |  |  | — |  |  | Tax benefit
| $ | (987 | ) |  | $ | — |  |  | Net of tax
Amortization of defined benefit retirement and supplemental executive retirement plan items |  |  |  |  |  |  |
Net actuarial loss | $ | (971 | ) |  | $ | (1,099 | ) |  | (1)
Net transition obligation | (13 | ) |  | (12 | ) |  | (1)
Prior service cost | (13 | ) |  | (14 | ) |  | (1)
Settlement | (138 | ) |  | — |  |  | (1)
| (1,135 | ) |  | (1,125 | ) |  | Total before tax
| 397 |  |  | 377 |  |  | Tax benefit
| $ | (738 | ) |  | $ | (748 | ) |  | Net of tax
Total reclassifications for the period | $ | (1,725 | ) |  | $ | (748 | ) |  | Net of tax
(1) | These AOCI components are included in the computation of net periodic pension cost (see Note 14 - Pension and Supplemental Executive Retirement Plans for additional details).

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- Definition The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -URI http://asc.fasb.org/topic&trid=2134417 + Details
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