PENSION PLANS (Tables)

12 Months Ended

Dec. 31, 2014

Pension and Other Postretirement Benefit Expense [Abstract]

Schedule of Aggregate Net Pension Expense

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

	Years Ended
	December 31, 2014		December 31, 2013			December 31, 2012
	(in thousands)
Service costs	$	1,526	$	1,795		$	1,290
Interest costs	1,509		1,430			1,447
Amortization of actuarial loss (gain)	47		376			(55		)
Settlement and other related gain	—		(59		)	(12		)
Curtailment gain	—		(1,607		)	—
Net pension period cost	$	3,082	$	1,935		$	2,670

Schedule of Changes in Projected Benefit Obligation and Accumulated Benefit Obligation

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

	December 31, 2014			December 31, 2013
	(in thousands)
Projected benefit obligation at beginning of the year	$	38,916		$	40,621
Service costs	1,526			1,795
Interest costs	1,509			1,430
Settlement	—			(59		)
Curtailment gain	—			(1,607		)
Actuarial loss (gain)	8,753			(3,460		)
Benefits paid	(483		)	(322		)
Foreign currency exchange rate changes	(385		)	518
Projected benefit obligation at end of the year	$	49,836		$	38,916
Accumulated benefit obligation at end of the year	$	46,092		$	35,761

Schedule of Actuarial Assumptions Used to Determine Benefit Obligations

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

	Years Ended
	December 31, 2014	December 31, 2013	December 31, 2011
Assumed discount rate	1.49-2.15%	3.1-4.0%	2.7-3.9%
Assumed compensation rate of increase	2.9-3.0%	2.4-3.0%	2.4-3.0%

Schedule of Expected Benefit Payments

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

Years Ending December 31:
	(in thousands)
2015	$	546
2016	758
2017	672
2018	955
2019	1,233
2020 through 2024	9,474
	$	13,638