EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category (USD $) In Thousands, unless otherwise specified
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EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items] |
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Defined Benefit Plan, Fair Value of Plan Assets |
$ 154,966 |
$ 153,731 |
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
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EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items] |
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Defined Benefit Plan, Fair Value of Plan Assets |
78,229 |
81,552 |
Significant Other Observable Inputs (Level 2) [Member]
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EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items] |
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|
Defined Benefit Plan, Fair Value of Plan Assets |
76,737 |
72,179 |
Significant Unobservable Inputs (Level 3) [Member]
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EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items] |
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Defined Benefit Plan, Fair Value of Plan Assets |
0 |
0 |
Cash and equivalents [Member]
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|
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EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items] |
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Defined Benefit Plan, Fair Value of Plan Assets |
2,912 |
0 |
Cash and equivalents [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
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EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items] |
|
|
Defined Benefit Plan, Fair Value of Plan Assets |
2,912 |
0 |
Cash and equivalents [Member] | Significant Other Observable Inputs (Level 2) [Member]
|
|
|
EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items] |
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|
Defined Benefit Plan, Fair Value of Plan Assets |
0 |
0 |
Cash and equivalents [Member] | Significant Unobservable Inputs (Level 3) [Member]
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|
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EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items] |
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|
Defined Benefit Plan, Fair Value of Plan Assets |
0 |
0 |
Short-term investment funds [Member]
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|
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EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items] |
|
|
Defined Benefit Plan, Fair Value of Plan Assets |
0 |
2,948 |
Short-term investment funds [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
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|
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EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items] |
|
|
Defined Benefit Plan, Fair Value of Plan Assets |
0 |
0 |
Short-term investment funds [Member] | Significant Other Observable Inputs (Level 2) [Member]
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|
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EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items] |
|
|
Defined Benefit Plan, Fair Value of Plan Assets |
0 |
2,948 |
Short-term investment funds [Member] | Significant Unobservable Inputs (Level 3) [Member]
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|
|
EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items] |
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|
Defined Benefit Plan, Fair Value of Plan Assets |
0 |
0 |
Government agency securities [Member]
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EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items] |
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Defined Benefit Plan, Fair Value of Plan Assets |
0 |
3,006 |
Government agency securities [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
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EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items] |
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Defined Benefit Plan, Fair Value of Plan Assets |
0 |
3,006 |
Government agency securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
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EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items] |
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Defined Benefit Plan, Fair Value of Plan Assets |
0 |
0 |
Government agency securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
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|
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EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items] |
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Defined Benefit Plan, Fair Value of Plan Assets |
0 |
0 |
Debt instruments [Member]
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EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items] |
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Defined Benefit Plan, Fair Value of Plan Assets |
29,447 |
30,856 |
Debt instruments [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
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EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items] |
|
|
Defined Benefit Plan, Fair Value of Plan Assets |
29,447 |
30,856 |
Debt instruments [Member] | Significant Other Observable Inputs (Level 2) [Member]
|
|
|
EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items] |
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Defined Benefit Plan, Fair Value of Plan Assets |
0 |
0 |
Debt instruments [Member] | Significant Unobservable Inputs (Level 3) [Member]
|
|
|
EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items] |
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|
Defined Benefit Plan, Fair Value of Plan Assets |
0 |
0 |
Equity securities [Member]
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EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items] |
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Defined Benefit Plan, Fair Value of Plan Assets |
45,870 |
47,690 |
Equity securities [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
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EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items] |
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|
Defined Benefit Plan, Fair Value of Plan Assets |
45,870 |
47,690 |
Equity securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
|
|
|
EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items] |
|
|
Defined Benefit Plan, Fair Value of Plan Assets |
0 |
0 |
Equity securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
|
|
|
EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items] |
|
|
Defined Benefit Plan, Fair Value of Plan Assets |
0 |
0 |
Commingled funds [Member]
|
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EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items] |
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|
Defined Benefit Plan, Fair Value of Plan Assets |
72,722 |
66,130 |
Commingled funds [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
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|
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EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items] |
|
|
Defined Benefit Plan, Fair Value of Plan Assets |
0 |
0 |
Commingled funds [Member] | Significant Other Observable Inputs (Level 2) [Member]
|
|
|
EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items] |
|
|
Defined Benefit Plan, Fair Value of Plan Assets |
72,722 |
66,130 |
Commingled funds [Member] | Significant Unobservable Inputs (Level 3) [Member]
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|
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EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items] |
|
|
Defined Benefit Plan, Fair Value of Plan Assets |
0 |
0 |
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EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items] |
|
|
Defined Benefit Plan, Fair Value of Plan Assets |
|
0 |
Insurance contracts [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
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EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items] |
|
|
Defined Benefit Plan, Fair Value of Plan Assets |
|
0 |
Insurance contracts [Member] | Significant Other Observable Inputs (Level 2) [Member]
|
|
|
EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items] |
|
|
Defined Benefit Plan, Fair Value of Plan Assets |
|
0 |
Insurance contracts [Member] | Significant Unobservable Inputs (Level 3) [Member]
|
|
|
EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items] |
|
|
Defined Benefit Plan, Fair Value of Plan Assets |
|
0 |
Limited partnerships and hedge fund investments [Member]
|
|
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EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items] |
|
|
Defined Benefit Plan, Fair Value of Plan Assets |
4,015 |
3,101 |
Limited partnerships and hedge fund investments [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
|
|
|
EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items] |
|
|
Defined Benefit Plan, Fair Value of Plan Assets |
0 |
0 |
Limited partnerships and hedge fund investments [Member] | Significant Other Observable Inputs (Level 2) [Member]
|
|
|
EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items] |
|
|
Defined Benefit Plan, Fair Value of Plan Assets |
4,015 |
3,101 |
Limited partnerships and hedge fund investments [Member] | Significant Unobservable Inputs (Level 3) [Member]
|
|
|
EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items] |
|
|
Defined Benefit Plan, Fair Value of Plan Assets |
$ 0 |
$ 0 |