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EMPLOYEE BENEFIT PLANS (Details 2) (USD $) In Thousands, except Per Share data, unless otherwise specified | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Sep. 30, 2013 | Jun. 30, 2013
Distributions and pension settlement expense |  |  |  |  |
Pension settlement expense, pre-tax | $ 2,111 | $ 0 | $ 1,125 |  |
Pre-tax amounts included in accumulated other comprehensive loss that have not yet been recognized in net periodic benefit cost |  |  |  |  |
Total | 17,044 | 86,737 | 88,393 |  |
Pre-tax amounts, which are reported within accumulated other comprehensive loss, expected to be recognized as components of net periodic benefit cost in next fiscal year |  |  |  |  |
Period of estimate of future compensation rates used to establish the assumed rate of compensation increase | 2 years |  |  |  |
Nonunion Defined Benefit Pension Plan |  |  |  |  |
Employee Benefit Plans |  |  |  |  |
Defined Benefit Plan Lump Sum Distribution Paid | 20,104 |  |  |  |
Distributions and pension settlement expense |  |  |  |  |
Pension settlement distributions | 22,486 | 17,226 |  |  |
Pension settlement expense, pre-tax | 2,111 | 0 | 0 |  |
Pension settlement expense per diluted share, net of taxes | $ 0.05 | $ 0.00 | $ 0.00 |  |
Pre-tax amounts included in accumulated other comprehensive loss that have not yet been recognized in net periodic benefit cost |  |  |  |  |
Unrecognized net actuarial loss | 16,003 | 82,337 |  |  |
Total | 16,003 | 82,337 |  |  |
Pre-tax amounts, which are reported within accumulated other comprehensive loss, expected to be recognized as components of net periodic benefit cost in next fiscal year |  |  |  |  |
Unrecognized net actuarial loss | 2,008 |  |  |  |
Total | 2,008 |  |  |  |
Weighted-average assumptions used to determine nonunion benefit obligations |  |  |  |  |
Discount rate (as a percent) | 3.80% | 3.10% |  | 3.70% | 3.90%
Rate of compensation increase (as a percent) |  | 3.30% |  |  |
Weighted-average assumptions used to determine net periodic benefit cost |  |  |  |  |
Discount rate (as a percent) | 3.10% | 3.70% | 4.70% |  |
Expected return on plan assets (as a percent) | 7.50% | 7.50% | 7.50% |  |
Rate of compensation increase (as a percent) | 3.30% | 3.30% | 3.20% |  |
Expected return on plan assets expected to be utilized in determining pension plan expenses for next fiscal year (as a percent) | 6.50% |  |  |  |
Estimated future benefit payments |  |  |  |  |
2014 | 22,396 |  |  |  |
2015 | 20,628 |  |  |  |
2016 | 19,792 |  |  |  |
2017 | 18,785 |  |  |  |
2018 | 17,187 |  |  |  |
2018-2022 | 73,713 |  |  |  |
Supplemental Benefit Plan |  |  |  |  |
Distributions and pension settlement expense |  |  |  |  |
Pension settlement distributions | 0 | 1,126 | 2,526 |  |
Pension settlement expense, pre-tax | 0 | 0 | 1,125 |  |
Pension settlement expense per diluted share, net of taxes |  | $ 0.00 | $ 0.03 |  |
Period of delay provision for key employees as required by Section 409A of the Internal Revenue Code related to lump-sum termination payment | 6 months |  |  |  |
Pre-tax amounts included in accumulated other comprehensive loss that have not yet been recognized in net periodic benefit cost |  |  |  |  |
Unrecognized net actuarial loss | 1,778 | 2,308 |  |  |
Total | 1,778 | 2,308 |  |  |
Pre-tax amounts, which are reported within accumulated other comprehensive loss, expected to be recognized as components of net periodic benefit cost in next fiscal year |  |  |  |  |
Unrecognized net actuarial loss | 226 |  |  |  |
Total | 226 |  |  |  |
Weighted-average assumptions used to determine nonunion benefit obligations |  |  |  |  |
Discount rate (as a percent) | 2.80% | 2.10% |  |  |
Weighted-average assumptions used to determine net periodic benefit cost |  |  |  |  |
Discount rate (as a percent) | 2.10% | 3.20% | 4.10% |  |
Estimated future benefit payments |  |  |  |  |
2016 | 1,235 |  |  |  |
2018-2022 | 7,042 |  |  |  |
Postretirement Health Benefit Plan |  |  |  |  |
Distributions and pension settlement expense |  |  |  |  |
Pension settlement distributions | 588 | 586 |  |  |
Pre-tax amounts included in accumulated other comprehensive loss that have not yet been recognized in net periodic benefit cost |  |  |  |  |
Unrecognized net actuarial loss | 150 | 3,169 |  |  |
Unrecognized prior service credit | (887) | (1,077) |  |  |
Total | (737) | 2,092 |  |  |
Pre-tax amounts, which are reported within accumulated other comprehensive loss, expected to be recognized as components of net periodic benefit cost in next fiscal year |  |  |  |  |
Unrecognized net actuarial loss | 17 |  |  |  |
Unrecognized prior service credit | (190) |  |  |  |
Total | (173) |  |  |  |
Weighted-average assumptions used to determine nonunion benefit obligations |  |  |  |  |
Discount rate (as a percent) | 4.70% | 3.80% |  |  |
Weighted-average assumptions used to determine net periodic benefit cost |  |  |  |  |
Discount rate (as a percent) | 3.80% | 4.30% | 5.40% |  |
Assumed health care cost trend rates |  |  |  |  |
Health care cost trend rate assumed for next year (as a percent) | 8.00% | 8.50% |  |  |
Health care cost trend rate assumed for next year, Post-65 (as a percent) | 5.00% |  |  |  |
Rate to which the cost trend rate is assumed to decline (as a percent) | 5.00% | 5.00% |  |  |
Rate to which the cost trend rate is assumed to decline, Post-65 (as a percent) | 5.00% |  |  |  |
Year that the rate reaches the cost trend assumed rate | 2020 | 2020 |  |  |
Year that the rate reaches the cost trend assumed rate, Post-65 | 2020 |  |  |  |
Effects of one-percentage-point change in assumed health care cost trend rates |  |  |  |  |
Effect of one-percentage-point increase on total of service and interest cost components | 220 |  |  |  |
Effect of one-percentage-point decrease on total of service and interest cost components | (174) |  |  |  |
Effect of one-percentage-point increase on postretirement benefit obligation | 2,854 |  |  |  |
Effect of one-percentage-point decrease on postretirement benefit obligation | (2,330) |  |  |  |
Estimated future benefit payments |  |  |  |  |
2014 | 610 |  |  |  |
2015 | 666 |  |  |  |
2016 | 709 |  |  |  |
2017 | 759 |  |  |  |
2018 | 860 |  |  |  |
2018-2022 | $ 4,620 |  |  |  |

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- Definition The amount of net gain (loss), per diluted share, net of taxes, recognized in net periodic benefit cost as a result of 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. + References No definition available. + Details
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- Definition The pretax net amount of gains and losses that are not yet recognized as a component of net periodic benefit cost, and that are recognized as increases or decreases in other comprehensive income as they arise. Gains and losses are due to changes in the value of either the benefit obligation or the plan assets resulting from experience different from that assumed or from a change in an actuarial assumption, or the consequence of a decision to temporarily deviate from the substantive plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=28358780&loc=SL7669646-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
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- Definition Amount related to the pretax cost of benefit changes attributable to plan participants' prior service pursuant to a plan amendment or a plan initiation, which has not yet been recognized as components of net periodic benefit cost. + 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 (j) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=28358780&loc=SL7669646-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 60 -Glossary Prior Service Cost -URI http://asc.fasb.org/extlink&oid=6521920 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Glossary Prior Service Cost -URI http://asc.fasb.org/extlink&oid=6521884 + Details
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- Definition Amount included in accumulated other comprehensive income (AOCI) expected to be recognized as components of net periodic benefit cost for the fiscal year that follows the most recent annual statement of financial position, including gain (loss), prior service cost (credit), and transition asset (obligation). + References No definition available. + Details
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- Definition Expected rate of compensation increases (for pay-related plans). + 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 (k)(2) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
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- Definition An assumption as to the rate of return on plan assets reflecting the average rate of earnings expected on the funds invested or to be invested to provide for the benefits included in the benefit obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Glossary Expected Long-Term Rate of Return on Plan Assets -URI http://asc.fasb.org/extlink&oid=6512013 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(3) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
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- Definition Expected rate of compensation increases (for pay-related plans). + 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 (k)(2) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
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- Definition The amount of payments made for which participants are entitled under a pension plan, including pension benefits, death benefits, and benefits due on termination of employment. Also includes payments made under a postretirement benefit plan, including prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services. This item represents a periodic decrease to the plan obligations and a decrease to plan assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Postretirement Benefits -URI http://asc.fasb.org/extlink&oid=6521376 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 60 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6414203&loc=d3e39716-114964 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Glossary Benefits -URI http://asc.fasb.org/extlink&oid=6506267 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 60 -Glossary Benefits -URI http://asc.fasb.org/extlink&oid=6506309 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(6) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b)(5) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
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- Definition Amount of benefits expected to be paid in the second fiscal year following the latest fiscal year from a defined benefit plan. + 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 (f) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
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- Definition Amount included in accumulated other comprehensive income (AOCI) related to gain (loss) expected to be recognized as components of net periodic benefit cost for the fiscal year that follows the most recent annual statement of financial position. + References No definition available. + Details
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- Definition Amount included in accumulated other comprehensive income (AOCI) related to prior service cost (credit) expected to be recognized as components of net periodic benefit cost for the fiscal year that follows the most recent annual statement of financial position. + References No definition available. + Details
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- Definition The assumed health care cost trend rate for the next year used to measure the expected cost of benefits covered by the plan (gross eligible charges). This is based upon the annual rate of change in the cost of health care benefits currently provided by the postretirement benefit plan, due to factors other than changes in the composition of the plan population by age and dependency status. + 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 (l) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Health Care Cost Trend Rate -URI http://asc.fasb.org/extlink&oid=6514820 + Details
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- Definition Amount of net gain (loss) recognized in net periodic benefit cost as a result of 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 30 -Section 15 -Paragraph 6 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=7577095&loc=d3e8001-114927 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=28361610&loc=d3e1928-114920 + Details
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- Definition The ultimate trend rate for health care costs. + 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 (l) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
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- Definition Year the ultimate health care cost trend rate is expected to be reached, in CCYY format. + 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 (l) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
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