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PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS (Table) | 6 Months Ended
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Jun. 30, 2016
Pension Plans Defined Benefit [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Schedule Of Defined Benefit Plans Disclosures | The components of net periodic pension cost for the three and six months ended June 30, 2016 and 2015 were as follows:
| Three Months Ended |  | Six Months Ended
(In thousands) | June 30, |  | June 30,
| 2016 |  | 2015 |  | 2016 |  | 2015
Service cost | $ | 6,248 |  |  | $ | 7,137 |  |  | $ | 12,485 |  |  | $ | 14,273 |
Interest cost | 7,709 |  |  | 7,497 |  |  | 15,412 |  |  | 14,988 |
Expected return on plan assets | (13,590 | ) |  | (13,688 | ) |  | (27,171 | ) |  | (27,367 | )
Amortization of prior service cost | (11 | ) |  | 156 |  |  | (23 | ) |  | 311 |
Amortization of unrecognized actuarial loss | 3,093 |  |  | 3,866 |  |  | 6,186 |  |  | 7,731 |
Net periodic benefit cost | $ | 3,449 |  |  | $ | 4,968 |  |  | $ | 6,889 |  |  | $ | 9,936 |

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- Definition Tabular disclosure of one or more of the entity's defined benefit pension plans or one or more other defined benefit postretirement plans, separately for pension plans and other postretirement benefit plans including the entity's schedule of fair value of plan assets for defined benefit or other postretirement plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e2439-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e2417-114920 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e2410-114920 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=73719040&loc=d3e4179-114921 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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