Benefit Plans (Tables)

6 Months Ended

Dec. 31, 2015

Pension Plan [Member]

Defined Benefit Plan Disclosure [Line Items]

Net periodic pension (income)

The table below summarizes the components of net periodic pension (income):

	Three Months Ended December 31,						Six Months Ended December 31,
(in thousands)	2015			2014			2015			2014
Service cost	$	1,156		$	1,384		$	2,319		$	2,799
Interest cost	9,438			9,745			18,923			19,681
Expected return on plan assets	(14,657		)	(14,900		)	(29,364		)	(29,947		)
Amortization of transition obligation	21			19			42			40
Amortization of prior service credit	(104		)	(71		)	(209		)	(141		)
Recognition of actuarial losses	1,815			937			3,648			1,937
Curtailment loss	—			358			—			358
Special termination benefit charge	54			459			107			459
Net periodic pension (income)	$	(2,277	)	$	(2,069	)	$	(4,534	)	$	(4,814	)

Other Postretirement Benefit Plan [Member]

Defined Benefit Plan Disclosure [Line Items]

Net periodic pension (income)

The table below summarizes the components of net periodic other postretirement benefit cost:

	Three Months Ended December 31,						Six Months Ended December 31,
(in thousands)	2015			2014			2015			2014
Service cost	$	—		$	27		$	—		$	54
Interest cost	210			259			420			519
Amortization of prior service credit	(5		)	(28		)	(11		)	(55		)
Recognition of actuarial loss	81			207			162			414
Curtailment gain	—			(221		)	—			(221		)
Net periodic other postretirement benefit cost	$	286		$	244		$	571		$	711