PENSION PLANS (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013 plan	Jun. 30, 2012
Defined Benefit Plan Disclosure
Number of types of retirement plans			2
Aggregate net pension expense relating to the two plan types
Service costs	$ 451,000	$ 304,000	$ 912,000	$ 632,000
Interest cost	357,000	358,000	722,000	726,000
Amortization of actuarial (gain) loss	15,000	(15,000)	31,000	(3,000)
Net pension period cost	823,000	647,000	1,665,000	1,355,000
Expected net pension cost for 2013			3,400,000
Expected cash funding for benefits to be paid 2013			500,000
Contributions by employer
Aggregate net pension expense relating to the two plan types
Cash funding for benefits paid	$ 100,000		$ 200,000
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