PENSION PLANS (Tables)

9 Months Ended

Sep. 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				Nine Months Ended
	September 30, 2015		September 30, 2014		September 30, 2015		September 30, 2014
	(in thousands)
Service costs	$	282	$	383	$	880	$	1,165
Interest costs	310		378		954		1,151
Amortization of actuarial loss	175		18		501		56
Net pension period cost	$	767	$	779	$	2,335	$	2,372