Retirement Benefits (Tables)

6 Months Ended

Dec. 31, 2015

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 and six months ended December 31, 2015 and 2014:

	Three Months Ended December 31,						Six Months Ended December 31,
	2015			2014			2015			2014
Service cost	$	1,405		$	1,004		$	2,839		$	2,027
Interest cost		1,714			1,660			3,441			3,384
Expected return on plan assets		(31	)		(63	)		(62	)		(129	)
Amortization of prior service cost		247			244			494			487
Amortization of net loss		1,309			981			2,624			1,929
Curtailments and Settlements		(90	)		286			(182	)		391
Net periodic benefit cost	$	4,554		$	4,112		$	9,154		$	8,089