Defined Benefit Pension and Other Postretirement Benefit Plans (Tables)

9 Months Ended

Dec. 31, 2017

Compensation and Retirement Disclosure [Abstract]

Schedule of components of net periodic benefit (income) costs relating to pension and other postretirement benefit plans

The components of net periodic benefit (income) costs relating to the Company’s pension and other postretirement benefit plans are as follows for the quarters ended December 31, 2017 and 2016 (amounts in thousands):

	Pension						Post-retirement Benefit Plan
	Quarters Ended December 31,						Quarters Ended December 31,
	2017			2016			2017			2016
Net service cost	$	1,307		$	347		$	—		$	—
Interest cost	425			358			3			1
Expected return on net assets	(501		)	(94		)	—			—
Amortization:
Actuarial (gain) loss	91			115			(47		)	(71		)
Prior service cost	20			21			—			—
Total net periodic benefit (income) costs	$	1,342		$	747		$	(44	)	$	(70	)

The components of net periodic benefit (income) costs relating to the Company’s pension and other postretirement benefit plans are as follows for the nine-month periods ended December 31, 2017 and 2016 (amounts in thousands):

	Pension						Post-retirement Benefit Plan
	Nine-Month Periods Ended December 31,						Nine-Month Periods Ended December 31,
	2017			2016			2017			2016
Net service cost	$	3,926		$	1,040		$	—		$	—
Interest cost	1,274			1,076			9			9
Expected return on net assets	(1,502		)	(283		)	—			—
Amortization:
Actuarial (gain) loss	271			345			(141		)	(155		)
Prior service cost	60			64			—			—
Total net periodic benefit (income) costs	$	4,029		$	2,242		$	(132	)	$	(146	)