Retirement Plans (tables)

12 Months Ended

Mar. 31, 2017

General Discussion Of Pension And Other Postretirement Benefits [Abstract]

Schedule of Changes in Projected Benefit Obligations [Table Text Block]

		2017		2016
		(In thousands)
Change in Benefit Obligation
Benefit obligation at beginning of year	$	214,036	$	212,908
Service cost		8,375		10,502
Interest cost		7,633		8,902
Plan amendments		92		-
Actuarial (gain) loss		(3,201)		(11,340)
Benefit payments and expenses		(10,913)		(6,936)
Benefit obligation at end of year	$	216,022	$	214,036
Change in Plan Assets
Fair value of plan assets at beginning of year	$	176,238	$	157,948
Actual gain on plan assets		34,304		2,126
Employer contributions		8,200		23,100
Benefit payments and expenses		(10,913)		(6,936)
Fair value of plan assets at end of year	$	207,829	$	176,238
Unfunded Status	$	(8,193)	$	(37,798)

Schedule of Amounts in Accumulated Other Comprehensive Income (Loss) to be Recognized over Next Fiscal Year [Table Text Block]

		2017		2016
		(In thousands)
Amounts Recognized in Accumulated Other
Comprehensive Pre-Tax Loss
Prior service cost	$	(826)	$	(843)
Net loss		(17,580)		(45,248)
Accumulated other comprehensive pre-tax loss	$	(18,406)	$	(46,091)

Schedule of Amounts Recognized In Other Comprehensive Income Loss [Table Text Block]

		Pension and
		post retirement plan
		adjustments, net
		of tax
		(In thousands)
Accumulated Other Comprehensive Loss
Balance at March 31, 2016	$	(28,396)
Other comprehensive gain before reclassifications		17,221
Reclassified from accumulated other comprehensive loss		-
Net current period other comprehensive loss		17,221
Balance at March 31, 2017	$	(11,175)

Schedule of Costs of Retirement Plans [Table Text Block]

The following table provides the components of net periodic benefit cost for the Plan for fiscal years 2017, 2016, and 2015:
		2017		2016		2015
		(In thousands)
Service cost	$	8,375	$	10,502	$	8,515
Interest cost		7,633		8,902		8,236
Expected return on plan assets		(12,696)		(11,685)		(11,360)
Amortization of net loss		2,858		3,854		350
Prior service cost		109		109		-
Net periodic benefit cost	$	6,279	$	11,682	$	5,741

Schedule of Assumptions Used [Table Text Block]

	2017		2016
Weighted Average Assumptions for Balance Sheet Liability at End of Year:
Discount rate - projected benefit obligation	4.35	%	4.36	%
Expected return on plan assets	7.25	%	7.25	%
Rate of compensation increase	3.00	%	3.00	%
Weighted Average Assumptions for Benefit Cost at Beginning of Year:
Discount rate - pension expense	4.34	%	4.15	%
Discount rate - service cost	4.67	%	4.15	%
Discount rate - interest cost	3.62	%	4.15	%
Expected return on plan assets	7.25	%	7.25	%
Rate of compensation increase	3.00	%	3.00	%

Schedule of Allocation of Plan Assets [Table Text Block]

The Company's plan assets consist of the following:
	Target		Percentage of Plan
	Allocation		Assets at March 31,
	2018		2017		2016
Plan Assets
Equity securities	99	%	99	%	99	%
Debt securities	-		-		-
Real estate	-		-		-
Cash	1		1		1
Total	100	%	100	%	100	%

Schedule Of Derivative Assets At Fair Value [Table Text Block]

		2017		2016
		Market Value		Market Value
		(In thousands)
Assets by Industry Type
Asset Category
Cash and cash equivalents:
Money market funds	$	1,585	$	1,497
Total cash and cash equivalents		1,585		1,497
Common equity securities:
Materials		10,952		9,379
Industrials		25,383		30,355
Telecommunication services		18,060		9,325
Consumer staples		43,641		33,048
Energy		16,110		14,658
Financials		33,818		34,891
Health Care		17,587		10,538
Information technology		13,887		9,681
Utilities		26,806		22,866
Total common equity securities		206,244		174,741
Total assets	$	207,829	$	176,238

Schedule of Expected Benefit Payments [Table Text Block]

Estimated future benefit payments reflecting expected future
service for the fiscal years ending March 31 (in thousands):
2018	$	7,784
2019		8,409
2020		8,995
2021		9,682
2022		10,295
2023-2027		61,816