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Retirement Plans (tables) | 12 Months Ended
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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

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- Definition Tabular disclosure of the net gain (loss) and net prior service cost or credit recognized in other comprehensive income (loss) for the period for pension plans and/or other employee benefit plans, and reclassification adjustments of other comprehensive income (loss) for the period, as those amounts, including amortization of the net transition asset or obligation, are recognized as components of net periodic benefit cost. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 + Details
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- Definition Tabular disclosure of the assumptions used to determine for pension plans and/or other employee benefit plans the benefit obligation and net benefit cost, including assumed discount rates, rate increase in compensation increase, and expected long-term rates of return on plan assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 + Details
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- Definition Tabular disclosure of the change in the benefit obligation of pension plans and/or other employee benefit plans from the beginning to the end of the period, showing separately, if applicable, the effects of the following: service cost, interest cost, contributions by plan participants, actuarial gains and losses, foreign currency exchange rate changes, benefits paid, plan amendments, business combinations, divestitures, curtailments, settlements, and special and contractual termination benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 + Details
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- Definition Tabular disclosure of the costs related to the various types of retirement plans including defined benefit pension plan cost, defined contribution plan cost, other postretirement benefit plan cost, and net periodic benefit cost. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 + Details
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- Definition Tabular disclosure of benefits expected to be paid by pension plans and/or other employee benefit plans in each of the next five fiscal years and in the aggregate for the five fiscal years thereafter. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 + Details
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