RETIREMENT AND DEFERRED COMPENSATION PLANS (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Level 3 | Infrastructure
Change in plan assets:
Fair value of plan assets at end of year	$ 8,587,000	$ 8,015,000	$ 5,670,000
Plan Assets:
Total Investments	8,587,000	8,015,000	5,670,000
Level 3 | Hedge Fund
Change in plan assets:
Fair value of plan assets at end of year	9,731,000	8,575,000	7,497,000
Plan Assets:
Total Investments	9,731,000	8,575,000	7,497,000
Domestic Plans
Change in benefit obligation:
Benefit obligation at beginning of year	136,321,000	111,947,000
Service cost	8,539,000	7,217,000	5,436,000
Interest cost	4,992,000	4,913,000	4,504,000
Actuarial (gain) loss	(14,260,000)	18,743,000
Benefits paid	(6,144,000)	(6,499,000)
Benefit obligation at end of year	129,448,000	136,321,000	111,947,000
Change in plan assets:
Fair value of plan assets at beginning of year	84,587,000	68,537,000
Actual return on plan assets	12,063,000	8,342,000
Employer contribution	10,061,000	14,207,000
Benefits paid	(6,144,000)	(6,499,000)
Fair value of plan assets at end of year	100,567,000	84,587,000	68,537,000
Funded status at end of year	(28,881,000)	(51,734,000)
Funded status amounts recognized in Consolidated Balance Sheet
Current liabilities	(809,000)	(369,000)
Non-current liabilities	(28,072,000)	(51,365,000)
Funded status amount	(28,881,000)	(51,734,000)
Amounts recognized in accumulated other comprehensive loss
Net actuarial loss	32,930,000	58,580,000
Net prior service cost		3,000
Tax effects	(12,349,000)	(21,969,000)
Net amount recognized	20,581,000	36,614,000
Changes in benefit obligations and plan assets recognized in other comprehensive income
Current year actuarial gain	20,548,000
Amortization of net loss	5,103,000
Amortization of prior service cost	3,000
Net amount recognized	25,654,000
Amounts in accumulated other comprehensive loss expected to be recognized as components of periodic benefit cost in 2014
Amortization of net loss	2,787,000
Amount expected to be recognized in next fiscal year	2,787,000
Components of net periodic benefit cost:
Service cost	8,539,000	7,217,000	5,436,000
Interest cost	4,992,000	4,913,000	4,504,000
Expected return on plan assets	(5,775,000)	(5,604,000)	(4,790,000)
Amortization of net loss	5,103,000	3,854,000	1,652,000
Amortization of prior service cost	3,000	4,000	4,000
Net periodic benefit cost	12,862,000	10,384,000	6,806,000
Total net periodic benefit cost	12,862,000	10,384,000	6,806,000
Accumulated benefit obligation	114,600,000	118,800,000
Projected benefit obligation ("PBO"), ABO, and fair value of plan assets for all pension plans with an ABO in excess of plan assets
Projected benefit obligation	129,448,000	136,321,000
Accumulated benefit obligation	114,592,000	118,804,000
Fair value of plan assets	100,567,000	84,587,000
PBO, ABO, and fair value of plan assets for all pension plans with a PBO in excess of plan assets
Projected benefit obligation	129,448,000	136,321,000
Accumulated benefit obligation	114,592,000	118,804,000
Fair value of plan assets	100,567,000	84,587,000
Weighted-average assumptions used to determine benefit obligations
Discount rate (as a percent)	4.75%	3.80%
Rate of compensation increase (as a percent)	4.00%	4.00%
Weighted-average assumptions used to determine net periodic benefit cost
Discount rate (as a percent)	3.80%	4.40%	5.40%
Expected long-term return on plan assets (as a percent)	7.00%	7.00%	7.00%
Rate of compensation increase (as a percent)	4.00%	4.00%	4.00%
Plan Assets:
Weighted-average asset allocations (as a percent)	100.00%	100.00%
Total Investments	100,567,000	84,587,000	68,537,000
Expected contribution in next fiscal year	10,000,000
Estimated benefit payments relating to defined benefit plans over the next ten years
2014	7,579,000
2015	7,351,000
2016	7,744,000
2017	10,174,000
2018	9,569,000
2019 - 2023	55,864,000
Domestic Plans | Cash and Short Term Securities
Change in plan assets:
Fair value of plan assets at end of year	9,070,000	887,000
Plan Assets:
Total Investments	9,070,000	887,000
Domestic Plans | Equity Securities
Change in plan assets:
Fair value of plan assets at beginning of year	42,523,000
Fair value of plan assets at end of year	49,261,000
Plan Assets:
Weighted-average asset allocations (as a percent)	59.00%	60.00%
Target allocation (as a percent)	60.00%
Total Investments	49,261,000
Domestic Plans | Fixed Income Securities
Plan Assets:
Weighted-average asset allocations (as a percent)	24.00%	30.00%
Domestic Plans | Infrastructure
Change in plan assets:
Fair value of plan assets at end of year	8,587,000	8,015,000
Plan Assets:
Weighted-average asset allocations (as a percent)	8.00%	10.00%
Total Investments	8,587,000	8,015,000
Domestic Plans | Money market
Plan Assets:
Weighted-average asset allocations (as a percent)	9.00%
Domestic Plans | Fixed income securities and infrastructure
Plan Assets:
Target allocation (as a percent)	40.00%
Domestic Plans | Core Fixed Income
Change in plan assets:
Fair value of plan assets at end of year	23,918,000	24,587,000
Plan Assets:
Total Investments	23,918,000	24,587,000
Domestic Plans | Hedge Fund
Change in plan assets:
Fair value of plan assets at end of year	9,731,000	8,575,000
Plan Assets:
Total Investments	9,731,000	8,575,000
Domestic Plans | Level 1
Change in plan assets:
Fair value of plan assets at end of year	82,249,000	67,997,000
Plan Assets:
Total Investments	82,249,000	67,997,000
Domestic Plans | Level 1 | Cash and Short Term Securities
Change in plan assets:
Fair value of plan assets at end of year	9,070,000	887,000
Plan Assets:
Total Investments	9,070,000	887,000
Domestic Plans | Level 1 | Cash and Short Term Securities | USD
Change in plan assets:
Fair value of plan assets at end of year	9,070,000	887,000
Plan Assets:
Total Investments	9,070,000	887,000
Domestic Plans | Level 1 | Equity Securities
Change in plan assets:
Fair value of plan assets at end of year	49,261,000	42,523,000
Plan Assets:
Total Investments	49,261,000	42,523,000
Domestic Plans | Level 1 | US Large Cap Equities
Change in plan assets:
Fair value of plan assets at end of year	20,159,000	17,142,000
Plan Assets:
Total Investments	20,159,000	17,142,000
Domestic Plans | Level 1 | US Small Cap Equities
Change in plan assets:
Fair value of plan assets at end of year	14,521,000	12,523,000
Plan Assets:
Total Investments	14,521,000	12,523,000
Domestic Plans | Level 1 | International Equities
Change in plan assets:
Fair value of plan assets at end of year	14,581,000	12,858,000
Plan Assets:
Total Investments	14,581,000	12,858,000
Domestic Plans | Level 1 | Core Fixed Income
Change in plan assets:
Fair value of plan assets at end of year	23,918,000	24,587,000
Plan Assets:
Total Investments	23,918,000	24,587,000
Domestic Plans | Level 3
Change in plan assets:
Fair value of plan assets at end of year	18,318,000	16,590,000
Plan Assets:
Total Investments	18,318,000	16,590,000
Domestic Plans | Level 3 | Infrastructure
Change in plan assets:
Fair value of plan assets at end of year	8,587,000	8,015,000
Plan Assets:
Total Investments	8,587,000	8,015,000
Domestic Plans | Level 3 | Hedge Fund
Change in plan assets:
Fair value of plan assets at end of year	9,731,000	8,575,000
Plan Assets:
Total Investments	9,731,000	8,575,000
Foreign Plans
Change in benefit obligation:
Benefit obligation at beginning of year	80,610,000	48,754,000
Service cost	3,901,000	2,244,000	2,018,000
Interest cost	2,676,000	2,658,000	2,518,000
Business acquired		9,148,000
Curtailment/Settlement	(1,342,000)
Actuarial (gain) loss	(1,752,000)	17,905,000
Benefits paid	(2,952,000)	(2,075,000)
Foreign currency translation adjustment	3,519,000	1,976,000
Benefit obligation at end of year	84,660,000	80,610,000	48,754,000
Change in plan assets:
Fair value of plan assets at beginning of year	47,876,000	39,835,000
Actual return on plan assets	1,742,000	1,547,000
Employer contribution	5,419,000	7,381,000
Business acquired		389,000
Benefits paid	(2,952,000)	(2,075,000)
Foreign currency translation adjustment	1,990,000	799,000
Fair value of plan assets at end of year	54,075,000	47,876,000	39,835,000
Funded status at end of year	(30,585,000)	(32,734,000)
Funded status amounts recognized in Consolidated Balance Sheet
Current liabilities		(1,187,000)
Non-current liabilities	(30,585,000)	(31,547,000)
Funded status amount	(30,585,000)	(32,734,000)
Amounts recognized in accumulated other comprehensive loss
Net actuarial loss	24,844,000	29,265,000
Net prior service cost	3,784,000	4,157,000
Tax effects	(9,116,000)	(10,788,000)
Net amount recognized	19,512,000	22,634,000
Changes in benefit obligations and plan assets recognized in other comprehensive income
Current year actuarial gain	3,005,000
Amortization of net loss	1,416,000
Amortization of prior service cost	373,000
Net amount recognized	4,794,000
Amounts in accumulated other comprehensive loss expected to be recognized as components of periodic benefit cost in 2014
Amortization of net loss	1,255,000
Amortization of prior service cost	324,000
Amount expected to be recognized in next fiscal year	1,579,000
Components of net periodic benefit cost:
Service cost	3,901,000	2,244,000	2,018,000
Interest cost	2,676,000	2,658,000	2,518,000
Expected return on plan assets	(1,821,000)	(1,538,000)	(1,753,000)
Amortization of net loss	1,416,000	475,000	836,000
Amortization of prior service cost	373,000	361,000	455,000
Net periodic benefit cost	6,545,000	4,200,000	4,074,000
Curtailment	1,000
Total net periodic benefit cost	6,546,000	4,200,000	4,074,000
Accumulated benefit obligation	67,000,000	63,600,000
Projected benefit obligation ("PBO"), ABO, and fair value of plan assets for all pension plans with an ABO in excess of plan assets
Projected benefit obligation	77,475,000	77,663,000
Accumulated benefit obligation	60,707,000	60,703,000
Fair value of plan assets	47,753,000	44,930,000
PBO, ABO, and fair value of plan assets for all pension plans with a PBO in excess of plan assets
Projected benefit obligation	81,158,000	77,663,000
Accumulated benefit obligation	63,527,000	60,703,000
Fair value of plan assets	50,573,000	44,930,000
Weighted-average assumptions used to determine benefit obligations
Discount rate (as a percent)	3.24%	3.19%
Rate of compensation increase (as a percent)	3.00%	3.00%
Weighted-average assumptions used to determine net periodic benefit cost
Discount rate (as a percent)	3.19%	5.10%	5.15%
Expected long-term return on plan assets (as a percent)	3.79%	3.83%	4.40%
Rate of compensation increase (as a percent)	3.00%	3.00%	3.00%
Plan Assets:
Weighted-average asset allocations (as a percent)	100.00%	100.00%
Total Investments	54,075,000	47,876,000	39,835,000
Expected contribution in next fiscal year	5,600,000
Estimated benefit payments relating to defined benefit plans over the next ten years
2014	2,529,000
2015	2,133,000
2016	2,678,000
2017	3,146,000
2018	3,825,000
2019 - 2023	24,731,000
Foreign Plans | Cash and Short Term Securities
Change in plan assets:
Fair value of plan assets at end of year	757,000	5,560,000
Plan Assets:
Total Investments	757,000	5,560,000
Foreign Plans | Equity Securities
Change in plan assets:
Fair value of plan assets at end of year	2,547,000	655,000
Plan Assets:
Weighted-average asset allocations (as a percent)	5.00%	1.00%
Total Investments	2,547,000	655,000
Foreign Plans | Fixed Income Securities
Plan Assets:
Weighted-average asset allocations (as a percent)	16.00%	6.00%
Foreign Plans | Money market
Plan Assets:
Weighted-average asset allocations (as a percent)	1.00%	12.00%
Target allocation (as a percent)	4.00%
Foreign Plans | Investment Funds
Change in plan assets:
Fair value of plan assets at beginning of year	38,849,000
Fair value of plan assets at end of year	42,261,000
Plan Assets:
Weighted-average asset allocations (as a percent)	78.00%	81.00%
Target allocation (as a percent)	96.00%
Total Investments	42,261,000
Foreign Plans | Core Fixed Income
Change in plan assets:
Fair value of plan assets at end of year	1,950,000	728,000
Plan Assets:
Total Investments	1,950,000	728,000
Foreign Plans | Corporate debts securities
Change in plan assets:
Fair value of plan assets at end of year	6,560,000	2,084,000
Plan Assets:
Total Investments	6,560,000	2,084,000
Foreign Plans | Level 1
Change in plan assets:
Fair value of plan assets at end of year	27,315,000	26,649,000
Plan Assets:
Total Investments	27,315,000	26,649,000
Foreign Plans | Level 1 | Cash and Short Term Securities
Change in plan assets:
Fair value of plan assets at end of year	757,000	5,560,000
Plan Assets:
Total Investments	757,000	5,560,000
Foreign Plans | Level 1 | Cash and Short Term Securities | EUR
Change in plan assets:
Fair value of plan assets at end of year	757,000	5,560,000
Plan Assets:
Total Investments	757,000	5,560,000
Foreign Plans | Level 1 | Equity Securities
Change in plan assets:
Fair value of plan assets at end of year	2,547,000	655,000
Plan Assets:
Total Investments	2,547,000	655,000
Foreign Plans | Level 1 | Investment Funds
Change in plan assets:
Fair value of plan assets at end of year	15,501,000	17,622,000
Plan Assets:
Total Investments	15,501,000	17,622,000
Foreign Plans | Level 1 | International Equities
Change in plan assets:
Fair value of plan assets at end of year	2,547,000	655,000
Plan Assets:
Total Investments	2,547,000	655,000
Foreign Plans | Level 1 | Core Fixed Income
Change in plan assets:
Fair value of plan assets at end of year	1,950,000	728,000
Plan Assets:
Total Investments	1,950,000	728,000
Foreign Plans | Level 1 | Corporate debts securities
Change in plan assets:
Fair value of plan assets at end of year	6,560,000	2,084,000
Plan Assets:
Total Investments	6,560,000	2,084,000
Foreign Plans | Level 1 | Euro Corporate Bonds
Change in plan assets:
Fair value of plan assets at end of year	6,560,000	2,084,000
Plan Assets:
Total Investments	6,560,000	2,084,000
Foreign Plans | Level 1 | Mutual Funds in Equities
Change in plan assets:
Fair value of plan assets at end of year	3,628,000	5,873,000
Plan Assets:
Total Investments	3,628,000	5,873,000
Foreign Plans | Level 1 | Mutual Funds in Bonds
Change in plan assets:
Fair value of plan assets at end of year	10,040,000	2,458,000
Plan Assets:
Total Investments	10,040,000	2,458,000
Foreign Plans | Level 1 | Mutual Funds Diversified
Change in plan assets:
Fair value of plan assets at end of year	1,833,000	9,291,000
Plan Assets:
Total Investments	1,833,000	9,291,000
Foreign Plans | Level 2
Change in plan assets:
Fair value of plan assets at end of year	26,760,000	21,227,000
Plan Assets:
Total Investments	26,760,000	21,227,000
Foreign Plans | Level 2 | Investment Funds
Change in plan assets:
Fair value of plan assets at end of year	26,760,000	21,227,000
Plan Assets:
Total Investments	26,760,000	21,227,000
Foreign Plans | Level 2 | Mutual Funds Diversified
Change in plan assets:
Fair value of plan assets at end of year	26,760,000	21,227,000
Plan Assets:
Total Investments	26,760,000	21,227,000
Non-qualified supplemental pension plan
Non-qualified supplemental pension plan information
Non funded liability	$ 6,500,000	$ 6,400,000