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Employee Benefit Plans (Tables) | 9 Months Ended
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Mar. 31, 2016
Pension Plan [Member] |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |
Schedule of Net Periodic Benefit Costs | The net periodic benefit cost for the defined benefit pension plans is as follows:
|  | Three Months Ended March 31, |  | Nine Months Ended March 31,
|  | 2016 |  | 2015 |  | 2016 |  | 2015
(In thousands) |  |  |  |  |  |
Service cost |  | $ | 97 |  |  | $ | 97 |  |  | $ | 291 |  |  | $ | 291 |
Interest cost |  | 1,546 |  |  | 1,415 |  |  | 4,638 |  |  | 4,245 |
Expected return on plan assets |  | (1,710 | ) |  | (1,823 | ) |  | (5,130 | ) |  | (5,469 | )
Amortization of net loss(1) |  | 370 |  |  | 303 |  |  | 1,110 |  |  | 909 |
Net periodic benefit cost (credit) |  | $ | 303 |  |  | $ | (8 | ) |  | $ | 909 |  |  | $ | (24 | )
___________ (1) These amounts represent the estimated portion of the net loss remaining in AOCI that is expected to be recognized as a component of net periodic benefit cost over the current fiscal year.
Schedule of Weighted Average Assumptions Used | Weighted-Average Assumptions Used to Determine Net Periodic Benefit Cost
| Fiscal
| 2016 |  | 2015
Discount rate | 4.40% |  | 4.15%
Expected long-term rate of return on plan assets | 7.50% |  | 7.50%
Other Postretirement Benefit Plan, Defined Benefit [Member] |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |
Schedule of Net Periodic Benefit Costs | The following table shows the components of net periodic postretirement benefit cost (credit) for the Retiree Medical Plan and Death Benefit for the three and nine months ended March 31, 2016 and 2015. Net periodic postretirement benefit credit (credit) for the three and nine months ended March 31, 2016 is based on employee census information and asset information as of June 30, 2015.
|  | Three Months Ended March 31, |  | Nine Months Ended March 31,
|  | 2016 |  | 2015 |  | 2016 |  | 2015
(In thousands) |  |  |  |
Service cost |  | $ | 347 |  |  | $ | 299 |  |  | $ | 1,041 |  |  | $ | 897 |
Interest cost |  | 299 |  |  | 235 |  |  | 897 |  |  | 705 |
Amortization of net gain |  | (49 | ) |  | (125 | ) |  | (147 | ) |  | (375 | )
Amortization of net prior service credit |  | (439 | ) |  | (439 | ) |  | (1,317 | ) |  | (1,317 | )
Net periodic postretirement benefit cost (credit) |  | $ | 158 |  |  | $ | (30 | ) |  | $ | 474 |  |  | $ | (90 | )
Schedule of Weighted Average Assumptions Used | Weighted-Average Assumptions Used to Determine Net Periodic Postretirement Benefit Cost
| Fiscal
| 2016 |  | 2015
Retiree Medical Plan discount rate | 4.69% |  | 4.29%
Death Benefit discount rate | 4.74% |  | 4.48%

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + 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=58740216&loc=d3e1928-114920 + Details
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- Definition Tabular disclosure of the changes in plan assets and benefit obligations recognized in other comprehensive income (loss) during the period. + References No definition available. + Details
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