Benefit Plans (Tables)

9 Months Ended

Mar. 31, 2016

Compensation and Retirement Disclosure [Abstract]

Net periodic costs

The following table provides summary disclosures of the net periodic postemployment costs recognized for the Company’s postemployment benefit plans:

	Pension Benefits						Retiree Health Care Benefits
Three Months Ended March 31,	2016			2015			2016			2015
Components of net periodic cost:
Service cost	$	23		$	24		$	5		$	13
Interest cost	216			224			18			24
Expected return on plan assets	(122		)	(124		)	—			—
Recognized net actuarial loss (gain)	228			140			(52		)	(22		)
Amortization of prior service cost	21			21			(67		)	(68		)
Net periodic cost	$	366		$	285		$	(96	)	$	(53	)

	Pension Benefits						Retiree Health Care Benefits
Nine Months Ended March 31,	2016			2015			2016			2015
Components of net periodic cost:
Service cost	$	69		$	73		$	17		$	39
Interest cost	648			672			56			71
Expected return on plan assets	(368		)	(371		)	—			—
Recognized net actuarial loss (gain)	685			419			(158		)	(66		)
Amortization of prior service cost	64			64			(203		)	(203		)
Net periodic cost	$	1,098		$	857		$	(288	)	$	(159	)