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Accumulated Other Comprehensive Income (Tables) | 3 Months Ended
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Mar. 31, 2016
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] |
Schedule of Accumulated Other Comprehensive Income | The following table summarizes the changes, net of tax within each classification of accumulated other comprehensive income for the three months ended March 31, 2016 and 2015.
|  | Unrealized |  |  |  |
|  | gains and |  | 2016
|  | Losses on available- for-sale |  | Retirement |  |
(Dollar amounts in thousands) |  | Securities |  | plans |  | Total
Beginning balance, January 1, |  | $ | 9,053 |  |  | $ | (18,454 | ) |  | $ | (9,401 | )
Change in other comprehensive income before reclassification |  | 4,039 |  |  | — |  |  | 4,039 |
Amounts reclassified from accumulated other comprehensive income |  | (1 | ) |  | 304 |  |  | 303 |
Net Current period other comprehensive other income |  | 4,038 |  |  | 304 |  |  | 4,342 |
Ending balance, March 31, |  | $ | 13,091 |  |  | $ | (18,150 | ) |  | $ | (5,059 | )
|  | Unrealized |  |  |  |
|  | gains and |  | 2015
|  | Losses on available- for-sale |  | Retirement |  |
(Dollar amounts in thousands) |  | Securities |  | plans |  | Total
Beginning balance, January 1, |  | $ | 10,278 |  |  | $ | (24,807 | ) |  | $ | (14,529 | )
Change in other comprehensive income before reclassification |  | 4,764 |  |  | 1,972 |  |  | 6,736 |
Amounts reclassified from accumulated other comprehensive income |  | (2 | ) |  | 492 |  |  | 490 |
Net Current period other comprehensive other income |  | 4,762 |  |  | 2,464 |  |  | 7,226 |
Ending balance, March 31, |  | $ | 15,040 |  |  | $ | (22,343 | ) |  | $ | (7,303 | )
Schedule Of Accumulated Other Comprehensive Income Loss Other Than Temporary Impairment |
|  | Balance at |  | Current Period |  | Balance at
(Dollar amounts in thousands) |  | 1/1/2015 |  | Change |  | 3/31/2015
Unrealized gains (losses) on securities available-for-sale |  |  |  |  |  |  |  |  |
without other than temporary impairment |  | $ | 7,164 |  |  | $ | 4,284 |  |  | $ | 11,448 |
Unrealized gains (losses) on securities available-for-sale |  |  |  |  |  |  |  |  |
with other than temporary impairment |  | 3,114 |  |  | 478 |  |  | 3,592 |
Total unrealized loss on securities available-for-sale |  | $ | 10,278 |  |  | $ | 4,762 |  |  | $ | 15,040 |
Unrealized loss on retirement plans |  | (24,807 | ) |  | 2,464 |  |  | (22,343 | )
TOTAL |  | $ | (14,529 | ) |  | $ | 7,226 |  |  | $ | (7,303 | )
|  | Three Months Ended March 31, 2016 |  |
Details about accumulated |  | Amount reclassified from |  | Affected line item in
other comprehensive |  | accumulated other |  | the statement where
income components |  | comprehensive income |  | net income is presented
|  | (in thousands) |  |
Unrealized gains and losses |  | $ | 3 |  |  | Net securities gains (losses)
on available-for-sale |  | (2 | ) |  | Income tax expense
securities |  | $ | 1 |  |  | Net of tax
Amortization of |  | $ | 507 |  |  | (a) Salary and benefits
retirement plan items |  | (203 | ) |  | Income tax expense
|  | $ | 304 |  |  | Net of tax
Total reclassifications for the period |  | $ | 305 |  |  | Net of tax
Accumulated Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent |
|  | Three Months Ended March 31, 2016 |  |
Details about accumulated |  | Amount reclassified from |  | Affected line item in
other comprehensive |  | accumulated other |  | the statement where
income components |  | comprehensive income |  | net income is presented
|  | (in thousands) |  |
Unrealized gains and losses |  | $ | 3 |  |  | Net securities gains (losses)
on available-for-sale |  | (2 | ) |  | Income tax expense
securities |  | $ | 1 |  |  | Net of tax
Amortization of |  | $ | 507 |  |  | (a) Salary and benefits
retirement plan items |  | (203 | ) |  | Income tax expense
|  | $ | 304 |  |  | Net of tax
Total reclassifications for the period |  | $ | 305 |  |  | Net of tax
(a) Included in the computation of net periodic benefit cost. (see Footnote 7 for additional details).
|  | Three Months Ended March 31, 2015 |  |
Details about accumulated |  | Amount reclassified from |  | Affected line item in
other comprehensive |  | accumulated other |  | the statement where
income components |  | comprehensive income |  | net income is presented
|  | (in thousands) |  |
Unrealized gains and losses |  | $ | 4 |  |  | Net securities gains (losses)
on available-for-sale |  | (2 | ) |  | Income tax expense
securities |  | $ | 2 |  |  | Net of tax
Amortization of |  | $ | (820 | ) |  | (a) Salary and benefits
retirement plan items |  | 328 |  |  | Income tax expense
|  | $ | (492 | ) |  | Net of tax
Total reclassifications for the period |  | $ | (490 | ) |  | Net of tax
(a) Included in the computation of net periodic benefit cost. (see Footnote 7 for additional details).

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=66004124&loc=SL7669686-108580 + Details
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