COMPONENTS OF PENSION PLAN NET PERIODIC BENEFIT COSTS (Tables)

3 Months Ended

Mar. 31, 2017

Pension Plan

Employee Benefit Plans

Components of net periodic benefit cost

		Three Months Ended
		March 31,
		2017		2016
	(in thousands)
Service cost		$	—	$	598
Interest cost			1,135		1,132
Expected return on plan assets			(1,252)		(1,287)
Amortization of prior service cost (1)			47		—
Amortization of net loss (1)			773		789
Net periodic benefit cost		$	703	$	1,232

(1) Amortization of prior service cost and net actuarial loss is included in the Operating expenses (excluding depreciation, depletion and amortization) line item within our condensed consolidated statements of income.