PENSION PLANS (Tables)

6 Months Ended

Jun. 30, 2015

Pension and Other Postretirement Benefit Expense [Abstract]

Schedule of Aggregate Net Pension Expense Relating to the Two Plan Types

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

	Three Months Ended				Six Months Ended
	June 30, 2015		June 30, 2014		June 30, 2015		June 30, 2014
	(in thousands)
Service costs	$	280	$	393	$	598	$	782
Interest costs	310		388		644		773
Amortization of actuarial loss	174		19		326		38
Net pension period cost	$	764	$	800	$	1,568	$	1,593