PENSION PLANS (Details) (USD $)	12 Months Ended
	Dec. 31, 2013 plan	Dec. 31, 2012	Dec. 31, 2011
Aggregate net pension expense relating to the two plan types
Service costs	$ 1,795,000	$ 1,290,000	$ 1,289,000
Interest costs	1,430,000	1,447,000	1,326,000
Amortization of actuarial loss (gain)	376,000	(55,000)	67,000
Settlement and other related gain	(59,000)	(12,000)	(726,000)
Curtailment gain	(1,607,000)	0
Net pension period cost	1,935,000	2,670,000	1,956,000
Change in projected benefit obligation and accumulated benefit obligation
Projected benefit obligation at beginning of the year	40,621,000	29,751,000
Service costs	1,795,000	1,290,000	1,289,000
Interest costs	1,430,000	1,447,000	1,326,000
Settlement	(59,000)	(12,000)
Curtailment gain	1,607,000	0
Actuarial (gain) loss	(3,460,000)	9,196,000
Benefits paid	(322,000)	(360,000)
Foreign currency exchange rate changes	518,000	(691,000)
Projected benefit obligation at end of the year	38,916,000	40,621,000	29,751,000
Accumulated benefit obligation at end of the year	35,761,000	34,216,000
Future estimated expected benefit payments over the next ten years
2014	474,000
2015	625,000
2016	695,000
2017	1,053,000
2018	905,000
2019 through 2023	9,614,000
Total	13,366,000
Number of types of retirement plans	2
Liability included in accrued and other liabilities	500,000	500,000
Accrued pension liability	38,418,000	40,087,000
Liability included in other long-term liabilities		40,100,000
Period of assumptions for discount rate (in years)	30 years
Future Estimated Payments Plan Period	10 years
Actuarial gains (losses) related to defined benefit pension plans, net of tax benefit (expense) of $(1,210) in 2013, $2,628 in 2012 and $0 in 2011	2,913,000	(6,778,000)	(197,000)
Expected net pension cost for next fiscal year	3,200,000
Expected cash funding for benefits to be paid next year	500,000
Contributions by employer
Future estimated expected benefit payments over the next ten years
Cash funding for benefits paid	$ 300,000
Minimum [Member]
Actuarial assumptions used to determine benefit obligations
Assumed discount rate (as a percent)	3.10%	2.70%	4.60%
Assumed compensation rate of increase (as a percent)	2.40%	2.40%	2.50%
Future estimated expected benefit payments over the next ten years
Period of salary paid to Company's French employees as termination benefits at retirement, range (in months)	1
Maximum [Member]
Actuarial assumptions used to determine benefit obligations
Assumed discount rate (as a percent)	4.00%	3.90%	5.30%
Assumed compensation rate of increase (as a percent)	3.00%	3.00%	3.00%
Future estimated expected benefit payments over the next ten years
Period of salary paid to Company's French employees as termination benefits at retirement, range (in months)	5