Employee Benefit Plans

9 Months Ended

Mar. 31, 2016

Compensation and Retirement Disclosure [Abstract]

9. Employee Benefit Plans

The Company maintains a noncontributory defined benefit pension plan for all domestic nonunion employees employed on or prior to December 31, 2013, who meet certain requirements of age, length of service and hours worked per year. Plan benefits are based upon years of service and average compensation, as defined within the plan.

The following table details the net periodic pension expense:

	Three Months						Nine Months
For the Periods Ended March 31	2016			2015			2016			2015
Service cost – benefits earned during the period		$	735		$	739		$	2,204		$	2,217
Interest cost on benefit obligation			723			654			2,170			1,963
Expected return on plan assets			(794)			(707)			(2,382)			(2,121)
Amortization of net actuarial (gain) loss and prior service costs			446			351			1,338			1,053
Net periodic pension expense		$	1,110		$	1,037		$	3,330		$	3,112