PENSION PLANS (Tables)

12 Months Ended

Dec. 31, 2013

Pension and Other Postretirement Benefit Expense [Abstract]

Aggregate net pension expense relating to the two plan types

The aggregate net pension expense relating to these two plans are as follows:

	Years Ended
	December 31, 2013			December 31, 2012			December 31, 2011
	(in thousands)
Service costs	$	1,795		$	1,290		$	1,289
Interest costs	1,430			1,447			1,326
Amortization of actuarial loss (gain)	376			(55		)	67
Settlement and other related gain	(59		)	(12		)	(726		)
Curtailment gain	(1,607		)	—			—
Net pension period cost	$	1,935		$	2,670		$	1,956

Schedule of change in projected benefit obligation and accumulated benefit obligation

The change in projected benefit obligation and the accumulated benefit obligation, were as follows:

	December 31, 2013			December 31, 2012
	(in thousands)
Projected benefit obligation at beginning of the year	$	40,621		$	29,751
Service costs	1,795			1,290
Interest costs	1,430			1,447
Settlement	(59		)	(12		)
Curtailment gain	(1,607		)	—
Actuarial (gain) loss	(3,460		)	9,196
Benefits paid	(322		)	(360		)
Foreign currency exchange rate changes	518			(691		)
Projected benefit obligation at end of the year	$	38,916		$	40,621
Accumulated benefit obligation at end of the year	$	35,761		$	34,216

Schedule of actuarial assumptions used to deteremine benefit obligations for the plans

Actuarial assumptions used to determine benefit obligations for the plans were as follows:

	Years Ended
	December 31, 2013	December 31, 2012	December 31, 2011
Assumed discount rate	3.1-4.0%	2.7-3.9%	4.6-5.3%
Assumed compensation rate of increase	2.4-3.0%	2.4-3.0%	2.5-3.0%

Schedule of future estimated expected benefit payments over the next ten years

Future estimated expected benefit payments over the next 10 years are as follows:

Years Ending December 31:
	(in thousands)
2014	$	474
2015	625
2016	695
2017	1,053
2018	905
2019 through 2023	9,614
	$	13,366