Net Periodic Benefit Cost (Tables)

9 Months Ended

Dec. 31, 2015

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 cost for the Company’s defined benefit pension plans (in thousands):

	Three months ended						Nine months ended
	December 31, 2015			December 31, 2014			December 31, 2015			December 31, 2014
Service costs	$	615		$	480		$	1,645		$	1,597
Interest cost	4,200			2,386			9,692			7,424
Expected return on plan assets	(5,848		)	(3,582		)	(13,925		)	(10,678		)
Net amortization	867			889			2,687			3,004
Curtailment	—			82			—			82
Net periodic pension cost	$	(166	)	$	255		$	99		$	1,429

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				Nine months ended
	December 31, 2015		December 31, 2014		December 31, 2015		December 31, 2014
Interest cost	$	40	$	53	$	142	$	161
Amortization of plan net losses	2		19		67		57
Net periodic postretirement cost	$	42	$	72	$	209	$	218