RETIREMENT AND DEFERRED COMPENSATION PLANS (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Domestic Plans
Components of Net Periodic Benefit Cost:
Service cost	$ 1,319,000	$ 1,220,000	$ 2,689,000	$ 2,367,000
Interest cost	1,094,000	1,072,000	2,228,000	2,079,000
Expected return on plan assets	(1,002,000)	(1,054,000)	(2,042,000)	(2,044,000)
Amortization of net loss	416,000	164,000	847,000	318,000
Amortization of prior service cost	1,000	1,000	2,000	2,000
Net periodic benefit cost	1,828,000	1,403,000	3,724,000	2,722,000
Defined benefit plans, employer contributions			12,200,000
Foreign Plans
Components of Net Periodic Benefit Cost:
Service cost	514,000	397,000	1,030,000	830,000
Interest cost	647,000	562,000	1,295,000	1,174,000
Expected return on plan assets	(460,000)	(328,000)	(921,000)	(685,000)
Amortization of net loss	199,000	61,000	399,000	127,000
Amortization of prior service cost	97,000	85,000	194,000	178,000
Net periodic benefit cost	997,000	777,000	1,997,000	1,624,000
Expected contribution in current fiscal year	2,200,000		2,200,000
Defined benefit plans, employer contributions			$ 500,000