RETIREMENT AND DEFERRED COMPENSATION PLANS (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Domestic Plans
Components of Net Periodic Benefit Cost:
Service cost	$ 1,405,000	$ 1,220,000	$ 4,095,000	$ 3,587,000
Interest cost	1,165,000	1,072,000	3,392,000	3,151,000
Expected return on plan assets	(1,566,000)	(1,054,000)	(3,608,000)	(3,098,000)
Amortization of net loss	398,000	164,000	1,245,000	482,000
Amortization of prior service cost	1,000	1,000	3,000	3,000
Net periodic benefit cost	1,403,000	1,403,000	5,127,000	4,125,000
Defined benefit plans, employer contributions			12,200,000
Foreign Plans
Components of Net Periodic Benefit Cost:
Service cost	517,000	404,000	1,547,000	1,233,000
Interest cost	650,000	571,000	1,945,000	1,745,000
Expected return on plan assets	(462,000)	(333,000)	(1,383,000)	(1,018,000)
Amortization of net loss	200,000	62,000	599,000	189,000
Amortization of prior service cost	97,000	87,000	291,000	265,000
Net periodic benefit cost	1,002,000	791,000	2,999,000	2,414,000
Expected contribution in current fiscal year	2,100,000		2,100,000
Defined benefit plans, employer contributions			$ 700,000