Employee Benefit Plans (Table Text Block)

12 Months Ended

Mar. 31, 2018

Table Text Block [Abstract]

Summary Of Financing Arrangements for Leveraged ESOP Debt

		Outstanding as of		Interest Payments
Financing Date		March 31, 2018		2018		2017		2016
		(In thousands)
June, 1991	$	16	$	1	$	2	$	10
July, 2009		466		26		36		33
February, 2016		5,122		242		–		–

Shares Held by the ESOP Plan

		Years Ended March 31,
		2018		2017
		(In thousands)
Allocated shares		1,112		1,160
Unreleased shares - leveraged		19		21
Fair value of unreleased shares - leveraged	$	6,448	$	8,127
Unreleased shares - non-leveraged		13		9
Fair value of unreleased shares - non-leveraged	$	4,557	$	3,539

Components of Net Periodic Post Retirement Benefit Cost

		Years Ended March 31,
		2018		2017		2016
		(In thousands)
Service cost for benefits earned during the period	$	1,073	$	1,026	$	961
Interest cost on accumulated postretirement benefit		869		814		752
Other components		58		88		35
Net periodic postretirement benefit cost	$	2,000	$	1,928	$	1,748

Components of Post Retirement Benefit Liabilities

		Years Ended March 31,
		2018		2017
		(In thousands)
Beginning of year	$	22,247	$	20,791
Service cost for benefits earned during the period		1,073		1,026
Interest cost on accumulated post retirement benefit		869		814
Net benefit payments and expense		(644)		(443)
Actuarial loss		(229)		59
Accumulated postretirement benefit obligation		23,316		22,247
Current liabilities		802		737
Non-current liabilities		22,514		21,510
Total post retirement benefit liability recognized in statement of financial position		23,316		22,247
Components included in accumulated other comprehensive income (loss):
Unrecognized net loss		(2,530)		(2,817)
Cumulative net periodic benefit cost (in excess of employer contribution)	$	20,786	$	19,430

Discount Rate Assumptions for Accumulated Postretirement Benefit Obligations

	Years Ended March 31,
	2018	2017	2016
	(In percentages)
Accumulated postretirement benefit obligation	3.98%	3.94%	3.89%

Future Net Benefit Payments Expected for Post Employee Benefit Obligations

		Future Net Benefit Payments
		(In thousands)
Year-ended:
2019	$	802
2020		946
2021		1,121
2022		1,317
2023		1,531
2024 through 2028		10,594
Total	$	16,311