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Income Taxes (Tables) | 12 Months Ended
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Jun. 30, 2017
Income Tax Disclosure [Abstract] |
Schedule of Components of Income Tax Expense (Benefit) | The current and deferred components of the provision for income taxes consist of the following:
|  | June 30,
(In thousands) |  | 2017 |  | 2016 |  | 2015
Current: |  |  |  |  |  |
Federal |  | $ | 132 |  |  | $ | 214 |  |  | $ | (30 | )
State |  | 340 |  |  | 103 |  |  | 309 |
Total current income tax expense |  | 472 |  |  | 317 |  |  | 279 |
Deferred: |  |  |  |  |  |
Federal |  | 13,110 |  |  | (66,648 | ) |  | 106 |
State |  | 2,372 |  |  | (13,666 | ) |  | 17 |
Total deferred income tax expense (benefit) |  | 15,482 |  |  | (80,314 | ) |  | 123 |
Income tax expense (benefit) |  | $ | 15,954 |  |  | $ | (79,997 | ) |  | $ | 402 |
Schedule of Effective Income Tax Rate Reconciliation | A reconciliation of income tax expense (benefit) to the federal statutory tax rate is as follows:
|  | June 30,
(In thousands) |  | 2017 |  | 2016 |  | 2015
Statutory tax rate |  | 35 | % |  | 35 | % |  | 34 | %
Income tax expense at statutory rate |  | $ | 14,121 |  |  | $ | 3,472 |  |  | $ | 358 |
State income tax expense, net of federal tax benefit |  | 1,819 |  |  | 557 |  |  | 260 |
Dividend income exclusion |  | (134 | ) |  | (140 | ) |  | (54 | )
Valuation allowance |  | (13 | ) |  | (83,230 | ) |  | (185 | )
Change in tax rate |  | — |  |  | (1,061 | ) |  | — |
Retiree life insurance |  | (69 | ) |  | 135 |  |  | — |
Change in contingency reserve (net) |  | 1 |  |  | — |  |  | — |
Other (net) |  | 229 |  |  | 270 |  |  | 23 |
Income tax expense (benefit) |  | $ | 15,954 |  |  | $ | (79,997 | ) |  | $ | 402 |
Schedule of Deferred Tax Assets and Liabilities | The primary components of the temporary differences which give rise to the Company’s net deferred tax assets (liabilities) are as follows:
|  | June 30,
(In thousands) |  | 2017 |  | 2016 |  | 2015
Deferred tax assets: |  |  |  |  |  |
Postretirement benefits |  | $ | 30,253 |  |  | $ | 33,273 |  |  | $ | 31,100 |
Accrued liabilities |  | 7,885 |  |  | 11,760 |  |  | 10,091 |
Net operating loss carryforwards |  | 38,985 |  |  | 38,196 |  |  | 41,544 |
Intangible assets |  | — |  |  | 71 |  |  | 594 |
Other |  | 6,824 |  |  | 6,881 |  |  | 6,794 |
Total deferred tax assets |  | 83,947 |  |  | 90,181 |  |  | 90,123 |
Deferred tax liabilities: |  |  |  |  |  |
Unrealized gain on investments |  | — |  |  | (609 | ) |  | (2,242 | )
Fixed assets |  | (17,096 | ) |  | (5,370 | ) |  | (2,647 | )
Other |  | (2,181 | ) |  | (1,789 | ) |  | (1,943 | )
Total deferred tax liabilities |  | (19,277 | ) |  | (7,768 | ) |  | (6,832 | )
Valuation allowance |  | (1,615 | ) |  | (1,627 | ) |  | (84,857 | )
Net deferred tax assets (liabilities) |  | $ | 63,055 |  |  | $ | 80,786 |  |  | $ | (1,566 | )
Summary of Income Tax Contingencies | unrecognized tax benefits attributable to uncertain tax positions taken in tax returns in each of fiscal 2017, 2016 and 2015 were zero and a

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- Definition Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319 + Details
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- Definition Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319 + Details
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- Definition Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 + Details
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- Definition Tabular disclosure for tax positions taken in the tax returns filed or to be filed for which it is more likely than not that the tax position will not be sustained upon examination by taxing authorities and other income tax contingencies. Includes, but is not limited to, interest and penalties, reconciliation of unrecognized tax benefits, unrecognized tax benefits that would affect the effective tax rate, tax years that remain subject to examination by tax jurisdictions, and information about positions for which it is reasonably possible that amounts unrecognized will significantly change within 12 months. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32840-109319 + Details
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