Net Periodic Benefit Cost (Tables)

6 Months Ended

Sep. 30, 2016

Pension Plans, Defined Benefiit

Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]

Schedule of Net Benefit Costs

The following table sets forth the components of net periodic pension (benefit) cost for the Company’s defined benefit pension plans (in thousands):

	Three months ended						Six months ended
	September 30, 2016			September 30, 2015			September 30, 2016			September 30, 2015
Service costs	$	451		$	513		$	902		$	1,030
Interest cost	4,116			3,033			8,231			5,492
Expected return on plan assets	(5,618		)	(4,398		)	(11,237		)	(8,077		)
Net amortization	796			911			1,590			1,820
Settlement	—			—			247			—
Net periodic pension (benefit) cost	$	(255	)	$	59		$	(267	)	$	265

Other Postretirement Benefit Plans, Defined Benefit

Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]

Schedule of Net Benefit Costs

The following table sets forth the components of net periodic postretirement benefit cost for the Company’s defined benefit postretirement plans (in thousands):

	Three months ended				Six months ended
	September 30, 2016		September 30, 2015		September 30, 2016		September 30, 2015
Interest cost	$	42	$	51	$	84	$	102
Amortization of plan net losses	10		32		19		65
Net periodic postretirement cost	$	52	$	83	$	103	$	167