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RETIREMENT ANNUITY AND GUARANTEED CONTINUOUS EMPLOYMENT PLANS (Textual) (Details) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2015 USD ($) | Sep. 30, 2015 USD ($) | Dec. 31, 2016 USD ($) hours | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($)
After-tax amounts included in Accumulated other comprehensive loss |  |  |  |  |
Unrecognized actuarial net loss |  |  | $ 95,927 |  |
Unrecognized prior service credits |  |  | (21) |  |
Unrecognized transition obligations |  |  | 33 |  |
Pre-tax amounts expected to be recognized as components of net periodic benefit cost during next fiscal year |  |  |  |  |
Unrecognized actuarial net loss |  |  | 3,928 |  |
Unrecognized prior service credits |  |  | 12 |  |
Unrecognized transition obligations |  |  | 2 |  |
Total accumulated benefit obligation for all plans | $ 523,728 |  | 560,230 | $ 523,728 |
Supplemental Executive Retirement Plan |  |  |  |  |
Total net pension costs |  |  | 13,988 | 162,815 | $ 12,395
Projected benefit obligation | 558,169 |  | $ 564,730 | 558,169 | 1,045,471
Other Benefits |  |  |  |  |
Minimum percentage of every standard work week for which, the Company will provide work to employees in Cleveland, Ohio, area operations, covered under the guaranteed continuous employment plan (as a percent) |  |  | 75.00% |  |
Hours in a standard work week under Guaranteed Continuous Employment Plan (hours) | hours |  |  | 40 |  |
Minimum notice period for the termination of Guaranteed Continuous Employment Plan (in months) |  |  | 6 months |  |
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements and Curtailments | (6,407) | $ (136,331) | $ 1,062 | (142,738) | (1,773)
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Curtailments |  |  | 2,206 |  |
Supplemental executive retirement plan (SERP) |  |  |  |  |
Supplemental Executive Retirement Plan |  |  |  |  |
Total net pension costs |  |  | 2,113 | 1,703 | 3,012
Projected benefit obligation | $ 14,643 |  | 16,738 | $ 14,643 | $ 17,953
Other Benefits |  |  |  |  |
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Curtailments |  |  | $ (1,144) |  |
Equity Securities |  |  |  |  |
Target allocation for pension plan assets |  |  |  |  |
Target plan asset allocations range minimum |  |  | 35.00% |  |
Target plan asset allocations range maximum |  |  | 45.00% |  |
Debt Securities |  |  |  |  |
Target allocation for pension plan assets |  |  |  |  |
Target plan asset allocations range minimum |  |  | 55.00% |  |
Target plan asset allocations range maximum |  |  | 65.00% |  |

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- Definition Represents the minimum notice period prior to the end of calendar year for termination of Guaranteed Continuous Employment Plan by the entity at the end of the year. + References No definition available. + Details
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- Definition For defined benefit pension plans, the actuarial present value of benefits (whether vested or nonvested) attributed by the pension benefit formula to employee service rendered before a specified date and based on employee service and compensation (if applicable) before that date. The accumulated benefit obligation differs from the projected benefit obligation in that it includes no assumption about future compensation levels. For plans with flat-benefit or nonpay-related pension benefit formulas, the accumulated benefit obligation and the projected benefit obligation are the same. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Accumulated Benefit Obligation -URI http://asc.fasb.org/extlink&oid=6503844 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 + Details
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- Definition Amount after tax of cost (credit) due to benefit changes attributable to plan participants' prior service pursuant to a plan amendment or a plan initiation, which has not yet been recognized as a component of net periodic benefit cost. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Prior Service Cost -URI http://asc.fasb.org/extlink&oid=49177896 + Details
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- Definition 1) For defined benefit pension plans, the benefit obligation is the projected benefit obligation, which is the actuarial present value as of a date of all benefits attributed by the pension benefit formula to employee service rendered prior to that date. 2) For other postretirement defined benefit plans, the benefit obligation is the accumulated postretirement benefit obligation, which is the actuarial present value of benefits attributed to employee service rendered to a particular date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Projected Benefit Obligation -URI http://asc.fasb.org/extlink&oid=6522206 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Accumulated Postretirement Benefit Obligation -URI http://asc.fasb.org/extlink&oid=6503904 + Details
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- Definition The amount of net gain (loss) recognized in net periodic benefit cost as a result of an event that significantly reduces the expected years of future service of present employees or eliminates for a significant number of employees the accrual of defined benefits for some or all of their future services. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Plan Curtailment -URI http://asc.fasb.org/extlink&oid=6520938 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(7) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Section 15 -Paragraph 6 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=7577095&loc=d3e8001-114927 + Details
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- Definition Amount of net gain (loss) recognized in net periodic benefit cost due to settlements and curtailments. Curtailments result from an event that significantly reduces the expected years of future service of present employees or eliminates for a significant number of employees the accrual of defined benefits for some or all of their future services. Settlements result from an irrevocable action that relieves the employer (or the plan) of primary responsibility for a benefit obligation and eliminates significant risks related to the obligation and the assets used to effect the settlement. Examples of transactions that constitute a settlement include, but are not limited to, lump-sum cash payments to plan participants in exchange for their rights to receive specified benefits and purchasing nonparticipating annuity contracts to cover vested benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(7) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 + Details
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