PENSION PLANS (Details) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012 plan	Sep. 30, 2011	Dec. 31, 2012
Pension and Other Postretirement Benefit Expense [Abstract]
Number of types of retirement plans			2
Aggregate net pension expense relating to the two plan types
Service costs	$ 311,000	$ 275,000	$ 943,000	$ 904,000
Interest cost	348,000	285,000	1,074,000	936,000
Amortization of actuarial (gain) loss	12,000	0	9,000	68,000
Settlement and other related gains				(726,000)
Net pension expense	671,000	560,000	2,026,000	1,182,000	2,800,000
Contributions by employer
Aggregate net pension expense relating to the two plan types
Cash funding for benefits to be paid in current fiscal year					300,000
France
Aggregate net pension expense relating to the two plan types
Settlement and other related gains				$ 700,000
Minimum
Defined Benefit Plan Disclosure
Period of salary paid to Company's French employees as termination benefits at retirement, range (in months)			1
Maximum
Defined Benefit Plan Disclosure
Period of salary paid to Company's French employees as termination benefits at retirement, range (in months)			5