Pension Plans (Tables)

9 Months Ended

Dec. 31, 2017

Retirement Benefits [Abstract]

Schedule of net benefit costs

The aggregate net pension expense relating to these two plans are as follows (amounts in thousands):

	Three Months Ended				Nine Months Ended
	December 31,				December 31,
	2017		2016		2017			2016
Service costs	$	390	$	327	$	1,131		$	1,054
Interest costs	253		214		742			698
Amortization of actuarial loss	214		—		630			—
Settlements and curtailments	—		354		(36		)	585
Net pension period cost	$	857	$	895	$	2,467		$	2,337