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OTHER COMPREHENSIVE INCOME (LOSS): | 12 Months Ended
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Dec. 31, 2015
Equity [Abstract] |
OTHER COMPREHENSIVE INCOME (LOSS) | OTHER COMPREHENSIVE INCOME (LOSS): The following table summarizes the changes, net of tax within each classification of accumulated other comprehensive income for the years ended December 31, 2015 and 2014.
|  | 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 |  | (1,214 | ) |  | 1,433 |  |  | 219 |
Amounts reclassified from accumulated other comprehensive income |  | (11 | ) |  | 4,920 |  |  | 4,909 |
Net current period other comprehensive income (loss) |  | (1,225 | ) |  | 6,353 |  |  | 5,128 |
Ending balance, December 31 |  | $ | 9,053 |  |  | $ | (18,454 | ) |  | $ | (9,401 | )
|  | Unrealized |  |  |  |
|  | gains and |  | 2014
|  | Losses on available- for-sale |  | Retirement |  |
(Dollar amounts in thousands) |  | Securities |  | plans |  | Total
Beginning balance, January 1 |  | $ | (3,635 | ) |  | $ | (10,334 | ) |  | $ | (13,969 | )
Change in other comprehensive income before reclassification |  | 13,911 |  |  | (14,934 | ) |  | (1,023 | )
Amounts reclassified from accumulated other comprehensive income |  | 2 |  |  | 461 |  |  | 463 |
Net current period other comprehensive income (loss) |  | 13,913 |  |  | (14,473 | ) |  | (560 | )
Ending balance, December 31 |  | $ | 10,278 |  |  | $ | (24,807 | ) |  | $ | (14,529 | )
|  | Balance at |  | Current Period |  | Balance at
(Dollar amounts in thousands) |  | 1/1/2015 |  | Change |  | 12/31/2015
Unrealized gains (losses) on securities available-for-sale |  |  |  |  |  |
without other than temporary impairment |  | $ | 7,164 |  |  | $ | (1,081 | ) |  | $ | 6,083 |
Unrealized gains (losses) on securities available-for-sale |  |  |  |  |  |  |  |  |
with other than temporary impairment |  | 3,114 |  |  | (144 | ) |  | 2,970 |
Total unrealized gain (loss) on securities available-for-sale |  | $ | 10,278 |  |  | $ | (1,225 | ) |  | $ | 9,053 |
Unrealized loss on retirement plans |  | (24,807 | ) |  | 6,353 |  |  | (18,454 | )
TOTAL |  | $ | (14,529 | ) |  | $ | 5,128 |  |  | $ | (9,401 | )
|  | Balance at |  | Current Period |  | Balance at
(Dollar amounts in thousands) |  | 1/1/2014 |  | Change |  | 12/31/2014
Unrealized gains (losses) on securities available-for-sale |  |  |  |  |  |  |  |  |
without other than temporary impairment |  | $ | (2,499 | ) |  | $ | 9,663 |  |  | $ | 7,164 |
Unrealized gains (losses) on securities available-for-sale |  |  |  |  |  |  |  |  |
with other than temporary impairment |  | (1,136 | ) |  | 4,250 |  |  | 3,114 |
Total unrealized gain (loss) on securities available-for-sale |  | $ | (3,635 | ) |  | $ | 13,913 |  |  | $ | 10,278 |
Unrealized loss on retirement plans |  | (10,334 | ) |  | (14,473 | ) |  | (24,807 | )
TOTAL |  | $ | (13,969 | ) |  | $ | (560 | ) |  | $ | (14,529 | )
|  | Balance as of December 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 |  | $ | 17 |  |  | Net securities gains (losses)
on available-for-sale |  | (6 | ) |  | Income tax expense
securities |  | $ | 11 |  |  | Net of tax
Amortization of |  | $ | (8,066 | ) |  | (a)
retirement plan items |  | 3,146 |  |  | Income tax expense
|  | $ | (4,920 | ) |  | Net of tax
Total reclassifications for the period |  | $ | (4,909 | ) |  | Net of tax
(a) Included in the computation of net periodic benefit cost which is included in salaries and benefits. (see Footnote 15 for additional details).
|  | Balance as of December 31, 2014 |  |
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 |  | 1 |  |  | Income tax expense
securities |  | $ | (2 | ) |  | Net of tax
Amortization of |  | $ | (756 | ) |  | (a)
retirement plan items |  | 295 |  |  | Income tax expense
|  | $ | (461 | ) |  | Net of tax
Total reclassifications for the period |  | $ | (463 | ) |  | Net of tax
(a) Included in the computation of net periodic benefit cost which is included in salaries and benefits. (see Footnote 15 for additional details).
|  | Balance at December 31, 2013 |  |
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 |  | $ | 423 |  |  | Net securities gains (losses)
on available-for-sale |  | (169 | ) |  | Income tax expense
securities |  | $ | 254 |  |  | Net of tax
Amortization of |  | $ | (17,615 | ) |  | (a)
retirement plan items |  | 7,046 |  |  | Income tax expense
|  | $ | (10,569 | ) |  | Net of tax
Total reclassifications for the period |  | $ | (10,315 | ) |  | Net of tax
(a) Included in the computation of net periodic benefit cost which is included in salaries and benefits. (see Footnote 15 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 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e689-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669619-108580 Reference 3: 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 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e716-108580 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e709-108580 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 7: 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 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e681-108580 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Reclassification Adjustments -URI http://asc.fasb.org/extlink&oid=6522872 + Details
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