Retirement Benefits (Tables)

3 Months Ended

Sep. 30, 2016

Compensation And Retirement Disclosure [Abstract]

Components of Net Periodic Benefit Costs

The following table presents the components of net periodic benefit cost for the three months ended September 30, 2016 and 2015:

	Three Months Ended September 30,
	2016			2015
Service cost	$	1,654		$	1,434
Interest cost		1,226			1,727
Expected return on plan assets		(28	)		(31	)
Amortization of prior service cost		214			247
Amortization of net loss		1,052			1,315
Curtailments and settlements		-			(92	)
Net periodic benefit cost	$	4,118		$	4,600