General Discussion of Pension and Other Postretirement Benefits [Abstract] | Period [Axis] |
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2015-07-01 - 2016-06-30 |
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General Discussion of Pension and Other Postretirement Benefits [Abstract] | |
Summary of changes in benefit obligations, plan assets and funded status for the post employment plans | The following table sets forth the changes in benefit obligations and plan assets during the year and the funded status for the post-employment plans at June 30: | | | | | | | | | | | | | | | | | | Pension Benefits | | Retiree Health Care Benefits | | 2016 |
| | 2015 |
| | 2016 |
| | 2015 |
| Change in benefit obligation: | | | | | | | | Benefit obligation at beginning of the year | $ | 29,994 |
| | $ | 34,558 |
| | $ | 2,144 |
| | $ | 2,790 |
| Service cost | 91 |
| | 97 |
| | 22 |
| | 53 |
| Interest cost | 879 |
| | 896 |
| | 75 |
| | 95 |
| Plan participants’ contributions | — |
| | — |
| | 60 |
| | 64 |
| Benefits paid | (5,555 | ) | | (6,697 | ) | | (229 | ) | | (238 | ) | Amendments | — |
| | (8 | ) | | — |
| | — |
| Actuarial loss (gain) during year | 1,196 |
| | 1,148 |
| | 163 |
| | (620 | ) | Benefit obligation at end of year | $ | 26,605 |
| | $ | 29,994 |
| | $ | 2,235 |
| | $ | 2,144 |
| Change in plan assets: | | | | | | | | Fair value of plan assets at beginning of year | $ | 7,185 |
| | $ | 7,245 |
| | $ | — |
| | $ | — |
| Actual (loss) gain on plan assets | (149 | ) | | 247 |
| | — |
| | — |
| Employer contributions | 5,256 |
| | 6,390 |
| | 169 |
| | 174 |
| Plan participants’ contributions | — |
| | — |
| | 60 |
| | 64 |
| Benefits paid | (5,555 | ) | | (6,697 | ) | | (229 | ) | | (238 | ) | Fair value of plan assets at end of year | $ | 6,737 |
| | $ | 7,185 |
| | $ | — |
| | $ | — |
| Funded status at end of year | $ | (19,868 | ) | | $ | (22,809 | ) | | $ | (2,235 | ) | | $ | (2,144 | ) |
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Amounts Recognized in Consolidated Balance Sheet [Table Text Block] | The amounts recognized in the consolidated balance sheets and in accumulated other comprehensive loss for the post-employment plans were as follows: | | | | | | | | | | | | | | | | | | Pension Benefits | | Retiree Health Care Benefits | June 30, | 2016 |
| | 2015 |
| | 2016 |
| | 2015 |
| Amounts recognized in the consolidated balance sheets: | | | | | | | | Other current liabilities | $ | 741 |
| | $ | 5,256 |
| | $ | 220 |
| | $ | 220 |
| Post-employment benefits | 19,127 |
| | 17,553 |
| | 2,015 |
| | 1,924 |
| Net amount recognized | $ | 19,868 |
| | $ | 22,809 |
| | $ | 2,235 |
| | $ | 2,144 |
| Amounts recognized in accumulated other comprehensive loss: | | | | | | | | Net actuarial (loss) gain | $ | (8,234 | ) | | $ | (7,311 | ) | | $ | 1,119 |
| | $ | 1,492 |
| Prior service cost | (121 | ) | | (208 | ) | | 948 |
| | 1,219 |
| Total amounts recognized in accumulated other comprehensive loss | $ | (8,355 | ) | | $ | (7,519 | ) | | $ | 2,067 |
| | $ | 2,711 |
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Information for pension plans with projected benefit obligations in excess of plan assets | The following table provides information for pension plans with projected benefit obligations and accumulated benefit obligations in excess of plan assets: | | | | | | | | | | Pension Benefits | June 30, | 2016 |
| | 2015 |
| Projected benefit obligations | $ | 26,605 |
| | $ | 29,994 |
| Accumulated benefit obligations | 26,605 |
| | 29,994 |
| Fair value of plan assets | 6,737 |
| | 7,185 |
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Net periodic costs | The net periodic costs (benefits) are as follows: | | | | | | | | | | | | | | | | | | | | | | | | | | Pension Benefits | | Retiree Health Care Benefits | Year Ended June 30, | 2016 |
| | 2015 |
| | 2014 |
| | 2016 |
| | 2015 |
| | 2014 |
| Service cost | $ | 91 |
| | $ | 97 |
| | $ | 77 |
| | $ | 22 |
| | $ | 53 |
| | $ | 48 |
| Interest cost | 879 |
| | 896 |
| | 1,180 |
| | 75 |
| | 95 |
| | 139 |
| Expected return on plan assets | (491 | ) | | (495 | ) | | (416 | ) | | — |
| | — |
| | — |
| Recognized net actuarial loss (gain) | 913 |
| | 559 |
| | 611 |
| | (210 | ) | | (87 | ) | | (38 | ) | Amortization of prior service cost | 86 |
| | 86 |
| | 78 |
| | (271 | ) | | (272 | ) | | (271 | ) | Net periodic cost (benefits) | $ | 1,478 |
| | $ | 1,143 |
| | $ | 1,530 |
| | $ | (384 | ) | | $ | (211 | ) | | $ | (122 | ) |
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Weighted-average actuarial assumptions used to determine benefit obligations and net periodic benefit cost | The weighted-average actuarial assumptions used to determine benefit obligations and net periodic benefit cost for the plans were as follows: | | | | | | | | | | | | | | Pension Benefits | | Retiree Health Care Benefits | June 30, | 2016 |
| | 2015 |
| | 2016 |
| | 2015 |
| Assumptions used to determine benefit obligations at year end: | | | | | | | | Discount rate | 2.3 | % | | 3.0 | % | | 3.3 | % | | 4.0 | % | Assumptions used to determine net periodic benefit cost: | | | | | | | | Discount rate | 3.0 | % | | 2.8 | % | | 4.0 | % | | 3.8 | % | Expected return on plan assets | 7.0 | % | | 7.0 | % | | N/A |
| | N/A |
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One-Percentage Point Change in Assumed Health Care Cost Trend Rates | A one-percentage point change in the assumed health care cost trend rates would have had the following effects as of June 30, 2016 and for the year then ended: | | | | | | | | | | One-Percentage Point | | | Increase | | Decrease | Effect on total service and interest cost components of periodic expense | $ | 13 |
| | $ | (11 | ) | Effect on post-retirement benefit obligation | 255 |
| | (214 | ) |
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Defined Benefit Plan Asset Information | Following are the fair values and target allocation as of June 30: | | | | | | | | | | | | Target Allocation | | Fair Value | | | | 2016 |
| | 2015 |
| Asset Class: | | | | | | Equity* securities (Level 1) | 40 – 70% | | $ | 3,843 |
| | $ | 4,022 |
| Debt securities (Level 2) | 20 – 50% | | 2,759 |
| | 2,930 |
| Other (Level 1) | 0 – 20% | | 135 |
| | 233 |
| Total | 100% | | $ | 6,737 |
| | $ | 7,185 |
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Estimated future benefit payments | The following benefit payments, which reflect expected future service, as applicable, are expected to be paid in each of the next five years and in the aggregate for the subsequent five years: | | | | | | | | | During Fiscal Years | Pension Benefits |
| | Retiree Health Care Benefits |
| 2017 | $ | 1,100 |
| | $ | 180 |
| 2018 | 1,700 |
| | 190 |
| 2019 | 2,200 |
| | 180 |
| 2020 | 3,800 |
| | 170 |
| 2021 | 3,000 |
| | 160 |
| 2022 through 2026 | 7,200 |
| | 550 |
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