RETIREMENT PLANS (Details) (USD $) | 12 Months Ended |
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 |
Defined Contribution Plan [Member] | | | |
Defined Contribution Plans Disclosure [Abstract] | | | |
Percentage of matching contributions under defined contribution plan (in hundredths) | 4.00% | | |
Total expense for defined contribution plans | $5,000,000 | $4,700,000 | $4,700,000 |
Pension Plans, Defined Benefit [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Assets for Plan Benefits | 39,520,000 | 37,122,000 | 35,141,000 |
Benefit obligation [Roll Forward] | | | |
Benefit obligation at beginning of year | 72,582,000 | 76,957,000 | |
Service cost | 2,523,000 | 3,260,000 | 2,583,000 |
Interest cost | 2,390,000 | 2,557,000 | 2,659,000 |
Foreign currency exchange rate changes | -1,889,000 | -703,000 | |
Benefits paid | -23,726,000 | -5,194,000 | |
Actuarial loss (gain) | 5,858,000 | -4,295,000 | |
Curtailment gain | -2,342,000 | 0 | |
Benefit obligation at end of year | 55,396,000 | 72,582,000 | 76,957,000 |
Change in fair value of plan assets [Roll Forward] | | | |
Plan assets at beginning of year | 37,122,000 | 35,141,000 | |
Company contributions | 22,402,000 | 5,701,000 | |
Foreign currency exchange rate changes | -2,379,000 | -539,000 | |
Benefits paid | -23,726,000 | -5,258,000 | |
Actual gain on plan assets | 6,101,000 | 2,077,000 | |
Plan assets at end of year | 39,520,000 | 37,122,000 | 35,141,000 |
Funded status | -15,876,000 | -35,460,000 | |
Accumulated benefit obligation | 54,435,000 | 68,391,000 | |
Amounts recognized in Consolidated Balance Sheets [Abstract] | | | |
Accrued employee and retiree benefits | -18,258,000 | -21,206,000 | |
Other accrued expenses | -7,263,000 | -19,144,000 | |
Prepaid expenses and other current assets | 9,645,000 | 4,890,000 | |
Net liability | -15,876,000 | -35,460,000 | |
Components of annual benefit cost [Abstract] | | | |
Service cost | 2,523,000 | 3,260,000 | 2,583,000 |
Interest cost | 2,390,000 | 2,557,000 | 2,659,000 |
Expected return on plan assets | -1,791,000 | -1,689,000 | -1,428,000 |
Amortization of prior service cost | 171,000 | 172,000 | 1,971,000 |
Recognized actuarial (gain) loss | -305,000 | 3,203,000 | 799,000 |
Settlement expense | 1,467,000 | 1,177,000 | 0 |
Curtailment gain | -754,000 | 0 | 0 |
Defined benefit expense | 3,701,000 | 8,680,000 | 6,584,000 |
Weighted average liability assumptions [Abstract] | | | |
Discount rate (in hundredths) | 3.70% | 3.91% | |
Expected return on plan assets (in hundredths) | 3.32% | 5.12% | |
Rate of compensation increase (in hundredths) | 0.37% | 4.59% | |
Weighted average cost assumption [Abstract] | | | |
Discount rate (in hundredths) | 3.91% | 3.27% | |
Expected return on plan assets (in hundredths) | 5.12% | 4.76% | |
Rate of compensation increase (in hundredths) | 4.59% | 4.01% | |
Amounts recognized in Accumulated Other Comprehensive Income [Abstract] | | | |
Prior service cost | 0 | 1,182,000 | |
Unrecognized net actuarial loss | 7,407,000 | 7,944,000 | |
Other Comprehensive Income (Loss), Pension Adjustment, Net of Tax [Abstract] | | | |
Net actuarial (loss) gain arising during the period | -387,000 | 3,180,000 | -3,947,000 |
Amortization of actuarial loss, included in defined benefit expense | 1,252,000 | 2,006,000 | 526,000 |
Amortization of prior service cost, included in defined benefit expense | 733,000 | 108,000 | 1,205,000 |
Pension adjustment, net of tax | 1,598,000 | 5,294,000 | -2,216,000 |
Estimated Future Benefit Payments [Abstract] | | | |
Expected Future Benefit Payments in Year One | 9,600,000 | | |
Expected Future Benefit Payments in Year Two | 7,700,000 | | |
Expected Future Benefit Payments in Year Three | 2,300,000 | | |
Expected Future Benefit Payments in Year Four | 4,500,000 | | |
Expected Future Benefit Payments in Year Five | 2,500,000 | | |
Expected Future Benefit Payments in Five Fiscal Years Thereafter | 17,500,000 | | |
Defined Benefit Plans, Estimated Future Employer Contributions in Next Fiscal Year | 9,700,000 | | |
Amounts that Will be Amortized from Accumulated Other Comprehensive Income (Loss) in Next Fiscal Year [Abstract] | | | |
Expected amortization of actuarial gain in next fiscal year | 300,000 | | |
Pension Plans, Defined Benefit [Member] | Fair Value, Inputs, Level 1 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Assets for Plan Benefits | 7,422,000 | 7,369,000 | |
Change in fair value of plan assets [Roll Forward] | | | |
Plan assets at end of year | 7,422,000 | 7,369,000 | |
Pension Plans, Defined Benefit [Member] | Fair Value, Inputs, Level 2 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Assets for Plan Benefits | 32,098,000 | 29,753,000 | |
Change in fair value of plan assets [Roll Forward] | | | |
Plan assets at end of year | 32,098,000 | 29,753,000 | |
Pension Plans, Defined Benefit [Member] | Fair Value, Inputs, Level 3 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Assets for Plan Benefits | 0 | 0 | |
Change in fair value of plan assets [Roll Forward] | | | |
Plan assets at end of year | 0 | 0 | |
Pension Plans, Defined Benefit [Member] | Private Equity Funds, Domestic [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Assets for Plan Benefits | 6,424,000 | 6,143,000 | |
Change in fair value of plan assets [Roll Forward] | | | |
Plan assets at end of year | 6,424,000 | 6,143,000 | |
Pension Plans, Defined Benefit [Member] | Private Equity Funds, Domestic [Member] | Fair Value, Inputs, Level 1 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Assets for Plan Benefits | 6,424,000 | 6,143,000 | |
Change in fair value of plan assets [Roll Forward] | | | |
Plan assets at end of year | 6,424,000 | 6,143,000 | |
Pension Plans, Defined Benefit [Member] | Private Equity Funds, Domestic [Member] | Fair Value, Inputs, Level 2 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Assets for Plan Benefits | 0 | 0 | |
Change in fair value of plan assets [Roll Forward] | | | |
Plan assets at end of year | 0 | 0 | |
Pension Plans, Defined Benefit [Member] | Private Equity Funds, Domestic [Member] | Fair Value, Inputs, Level 3 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Assets for Plan Benefits | 0 | 0 | |
Change in fair value of plan assets [Roll Forward] | | | |
Plan assets at end of year | 0 | 0 | |
Pension Plans, Defined Benefit [Member] | Private Equity Funds, Foreign [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Assets for Plan Benefits | 242,000 | 7,294,000 | |
Change in fair value of plan assets [Roll Forward] | | | |
Plan assets at end of year | 242,000 | 7,294,000 | |
Pension Plans, Defined Benefit [Member] | Private Equity Funds, Foreign [Member] | Fair Value, Inputs, Level 1 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Assets for Plan Benefits | 0 | 0 | |
Change in fair value of plan assets [Roll Forward] | | | |
Plan assets at end of year | 0 | 0 | |
Pension Plans, Defined Benefit [Member] | Private Equity Funds, Foreign [Member] | Fair Value, Inputs, Level 2 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Assets for Plan Benefits | 242,000 | 7,294,000 | |
Change in fair value of plan assets [Roll Forward] | | | |
Plan assets at end of year | 242,000 | 7,294,000 | |
Pension Plans, Defined Benefit [Member] | Private Equity Funds, Foreign [Member] | Fair Value, Inputs, Level 3 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Assets for Plan Benefits | 0 | 0 | |
Change in fair value of plan assets [Roll Forward] | | | |
Plan assets at end of year | 0 | 0 | |
Pension Plans, Defined Benefit [Member] | Fixed Income Funds [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Assets for Plan Benefits | 22,710,000 | 23,162,000 | |
Change in fair value of plan assets [Roll Forward] | | | |
Plan assets at end of year | 22,710,000 | 23,162,000 | |
Pension Plans, Defined Benefit [Member] | Fixed Income Funds [Member] | Fair Value, Inputs, Level 1 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Assets for Plan Benefits | 960,000 | 1,186,000 | |
Change in fair value of plan assets [Roll Forward] | | | |
Plan assets at end of year | 960,000 | 1,186,000 | |
Pension Plans, Defined Benefit [Member] | Fixed Income Funds [Member] | Fair Value, Inputs, Level 2 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Assets for Plan Benefits | 21,750,000 | 21,976,000 | |
Change in fair value of plan assets [Roll Forward] | | | |
Plan assets at end of year | 21,750,000 | 21,976,000 | |
Pension Plans, Defined Benefit [Member] | Fixed Income Funds [Member] | Fair Value, Inputs, Level 3 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Assets for Plan Benefits | 0 | 0 | |
Change in fair value of plan assets [Roll Forward] | | | |
Plan assets at end of year | 0 | 0 | |
Pension Plans, Defined Benefit [Member] | Other Investments [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Assets for Plan Benefits | 10,144,000 | 523,000 | |
Change in fair value of plan assets [Roll Forward] | | | |
Plan assets at end of year | 10,144,000 | 523,000 | |
Pension Plans, Defined Benefit [Member] | Other Investments [Member] | Fair Value, Inputs, Level 1 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Assets for Plan Benefits | 38,000 | 40,000 | |
Change in fair value of plan assets [Roll Forward] | | | |
Plan assets at end of year | 38,000 | 40,000 | |
Pension Plans, Defined Benefit [Member] | Other Investments [Member] | Fair Value, Inputs, Level 2 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Assets for Plan Benefits | 10,106,000 | 483,000 | |
Change in fair value of plan assets [Roll Forward] | | | |
Plan assets at end of year | 10,106,000 | 483,000 | |
Pension Plans, Defined Benefit [Member] | Other Investments [Member] | Fair Value, Inputs, Level 3 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Assets for Plan Benefits | 0 | 0 | |
Change in fair value of plan assets [Roll Forward] | | | |
Plan assets at end of year | $0 | $0 | |