EMPLOYEE BENEFIT PLANS (Tables)

3 Months Ended

Jun. 30, 2017

Compensation And Retirement Disclosure [Abstract]

Schedule of Carrying Value of Trust Assets, Including Unrealized Gains or Losses

The following table summarizes the carrying value of the trust assets, including unrealized gains or losses at June 30, 2017 and March 31, 2017:

	June 30,			March 31,
(In thousands)	2017			2017
Investments held in Rabbi Trust	$	8,723			8,759
Unrealized losses in fair value of trust assets		(9	)		(95	)
Unrealized losses in fair value of trust assets    are net of income tax expense of		(223	)		(223	)
Obligations under the supplemental plan		29,701			29,108

Schedule of Net Periodic Benefit Cost

The net periodic benefit cost for the company’s defined benefit pension plans and supplemental plan (referred to collectively as “Pension Benefits”) and the postretirement health care and life insurance plan (referred to collectively as “Other Benefits”) is comprised of the following components:

	Quarter Ended
	June 30,
(In thousands)	2017			2016
Pension Benefits:
Service cost	$	294			252
Interest cost		984			941
Expected return on plan assets		(518	)		(548	)
Administrative expenses		2			2
Amortization of prior service cost		—			—
Recognized actuarial loss		561			446
Net periodic benefit cost	$	1,323			1,093
Other Benefits:
Service cost	$	17			20
Interest cost		48			50
Amortization of prior service cost		(695	)		(1,086	)
Recognized actuarial benefit		(252	)		(285	)
Net periodic benefit cost	$	(882	)		(1,301	)