Slicers (applies to each fact value in each table cell)

Reporting Entity [Axis]

0000109563 (http://www.sec.gov/CIK)

General Discussion of Pension and Other Postretirement Benefits [Abstract]	Period [Axis]
	2015-07-01 - 2016-06-30
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 )
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
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
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 )
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
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 )
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
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