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Income Taxes (Tables) | 12 Months Ended
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Jun. 30, 2018
Income Tax Disclosure [Abstract] |
Schedule of income (loss) before income taxes |
For the Years Ended June 30 |  |  | 2018 |  |  | 2017 |  |  | 2016 |
Domestic |  |  |  | $ | 19,819 |  |  |  |  | $ | 18,015 |  |  |  |  | $ | 2,027 |  |
Foreign |  |  |  |  | 68,251 |  |  |  |  |  | 62,528 |  |  |  |  |  | 74,734 |  |
Income (loss) before income taxes |  |  |  | $ | 88,070 |  |  |  |  | $ | 80,543 |  |  |  |  | $ | 76,761 |  |
Schedule of components of the provision for income taxes |
For the Years Ended June 30 |  |  | 2018 |  |  | 2017 |  |  | 2016 |
Current provision (benefit): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Federal |  |  |  | $ | 81 |  |  |  |  | $ | 383 |  |  |  |  | $ | (2,889) |  |
State and local |  |  |  |  | 1,744 |  |  |  |  |  | 724 |  |  |  |  |  | (474) |  |
Foreign |  |  |  |  | 15,268 |  |  |  |  |  | 14,839 |  |  |  |  |  | 20,168 |  |
Total current provision |  |  |  |  | 17,093 |  |  |  |  |  | 15,946 |  |  |  |  |  | 16,805 |  |
Deferred provision (benefit): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Federal |  |  |  |  | 2,746 |  |  |  |  |  | 4,675 |  |  |  |  |  | (2,985) |  |
State and local |  |  |  |  | 2,156 |  |  |  |  |  | 251 |  |  |  |  |  | 911 |  |
Foreign |  |  |  |  | 769 |  |  |  |  |  | (833) |  |  |  |  |  | (989) |  |
Change in valuation allowance–domestic |  |  |  |  | — |  |  |  |  |  | — |  |  |  |  |  | (19,588) |  |
Change in valuation allowance–foreign |  |  |  |  | 423 |  |  |  |  |  | (4,111) |  |  |  |  |  | (121) |  |
Total deferred provision |  |  |  |  | 6,094 |  |  |  |  |  | (18) |  |  |  |  |  | (22,772) |  |
Provision (benefit) for income taxes |  |  |  | $ | 23,187 |  |  |  |  | $ | 15,928 |  |  |  |  | $ | (5,967) |  |
Schedule of reconciliations of the Federal statutory rate to the Company's effective tax rate |
For the Years Ended June 30 |  |  | 2018 |  |  | 2017 |  |  | 2016 |
Federal income tax rate |  |  |  |  | 28.1% |  |  |  |  |  | 35.0% |  |  |  |  |  | 35.0% |  |
State and local taxes, net of federal benefit |  |  |  |  | 1.5 |  |  |  |  |  | 0.9 |  |  |  |  |  | 0.2 |  |
Foreign income tax rates |  |  |  |  | (1.5) |  |  |  |  |  | (6.8) |  |  |  |  |  | (5.5) |  |
Foreign incentive tax rates |  |  |  |  | (3.3) |  |  |  |  |  | (3.1) |  |  |  |  |  | (4.5) |  |
Domestic tax on foreign income |  |  |  |  | — |  |  |  |  |  | 2.7 |  |  |  |  |  | 2.7 |  |
Changes in uncertain tax positions |  |  |  |  | 1.1 |  |  |  |  |  | 1.6 |  |  |  |  |  | (4.9) |  |
Permanent items |  |  |  |  | 0.5 |  |  |  |  |  | (0.9) |  |  |  |  |  | 1.5 |  |
Exercise of employee stock options |  |  |  |  | (4.3) |  |  |  |  |  | (3.8) |  |  |  |  |  | (4.6) |  |
Mandatory toll charge from Tax Act |  |  |  |  | 0.5 |  |  |  |  |  | — |  |  |  |  |  | — |  |
Reduction of domestic deferred tax assets |  |  |  |  | 2.6 |  |  |  |  |  | — |  |  |  |  |  | — |  |
Reduction of foreign deferred tax assets |  |  |  |  | 1.3 |  |  |  |  |  | — |  |  |  |  |  | — |  |
Recognition of foreign tax credits |  |  |  |  | (0.7) |  |  |  |  |  | — |  |  |  |  |  | — |  |
Reclassification from accumulated other comprehensive income |  |  |  |  | 0.6 |  |  |  |  |  | — |  |  |  |  |  | — |  |
Release of foreign valuation allowance |  |  |  |  | — |  |  |  |  |  | (5.1) |  |  |  |  |  | — |  |
Release of domestic valuation allowance |  |  |  |  | — |  |  |  |  |  | — |  |  |  |  |  | (27.8) |  |
Other |  |  |  |  | (0.1) |  |  |  |  |  | (0.7) |  |  |  |  |  | 0.1 |  |
Effective tax rate |  |  |  |  | 26.3% |  |  |  |  |  | 19.8% |  |  |  |  |  | (7.8)% |  |
Schedule of the tax effects of significant temporary differences that comprise deferred tax assets and liabilities |
As of June 30 |  |  | 2018 |  |  | 2017 |
Deferred tax assets: |  |  |  |  |  |  |  |  |  |  |  |  |
Employee related accruals |  |  |  | $ | 4,952 |  |  |  |  | $ | 7,146 |  |
Inventory |  |  |  |  | 3,953 |  |  |  |  |  | 4,851 |  |
Environmental remediation |  |  |  |  | 1,341 |  |  |  |  |  | 2,280 |  |
Net operating loss carry forwards–domestic |  |  |  |  | 1,577 |  |  |  |  |  | 4,893 |  |
Net operating loss carry forwards–foreign |  |  |  |  | 3,243 |  |  |  |  |  | 4,023 |  |
Other |  |  |  |  | 9,986 |  |  |  |  |  | 11,139 |  |
|  |  |  |  | 25,052 |  |  |  |  |  | 34,332 |  |
Valuation allowance |  |  |  |  | (861) |  |  |  |  |  | (438) |  |
|  |  |  |  | 24,191 |  |  |  |  |  | 33,894 |  |
Deferred tax liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |
Property, plant and equipment and intangible assets |  |  |  |  | (8,957) |  |  |  |  |  | (9,671) |  |
Other |  |  |  |  | (1,906) |  |  |  |  |  | (2,004) |  |
|  |  |  |  | (10,863) |  |  |  |  |  | (11,675) |  |
Net deferred tax asset |  |  |  | $ | 13,328 |  |  |  |  | $ | 22,219 |  |
Schedule of deferred taxes included in the line items of the consolidated balance sheets |
As of June 30 |  |  | 2018 |  |  | 2017 |
Other assets |  |  |  | $ | 15,424 |  |  |  |  | $ | 23,269 |  |
Other liabilities |  |  |  |  | (2,096) |  |  |  |  |  | (1,050) |  |
|  |  |  | $ | 13,328 |  |  |  |  | $ | 22,219 |  |
Schedule of the valuation allowance for deferred tax assets |
As of June 30 |  |  | 2018 |  |  | 2017 |  |  | 2016 |
Balance at beginning of period |  |  |  | $ | 438 |  |  |  |  | $ | 4,614 |  |  |  |  | $ | 26,622 |  |
Provision for income taxes |  |  |  |  | 423 |  |  |  |  |  | (4,111) |  |  |  |  |  | (19,709) |  |
Net operating loss utilization |  |  |  |  | — |  |  |  |  |  | (65) |  |  |  |  |  | (2,299) |  |
Balance at end of period |  |  |  | $ | 861 |  |  |  |  | $ | 438 |  |  |  |  | $ | 4,614 |  |
Schedule of the reconciliation of the beginning and ending amount of unrecognized tax benefits |
As of June 30 |  |  | 2018 |  |  | 2017 |  |  | 2016 |
Unrecognized tax benefits–beginning of period |  |  |  | $ | 6,553 |  |  |  |  | $ | 4,946 |  |  |  |  | $ | 8,078 |  |
Tax position changes–current period |  |  |  |  | 1,749 |  |  |  |  |  | 1,490 |  |  |  |  |  | 472 |  |
Tax position changes–prior periods, net of settlements with tax authorities |  |  |  |  | (994) |  |  |  |  |  | — |  |  |  |  |  | 188 |  |
Lapse of statute of limitations |  |  |  |  | — |  |  |  |  |  | (391) |  |  |  |  |  | (3,700) |  |
Translation |  |  |  |  | (308) |  |  |  |  |  | 508 |  |  |  |  |  | (92) |  |
Unrecognized tax benefits–end of period |  |  |  |  | 7,000 |  |  |  |  |  | 6,553 |  |  |  |  |  | 4,946 |  |
Interest and penalties–end of period |  |  |  |  | 633 |  |  |  |  |  | 449 |  |  |  |  |  | 308 |  |
Total liabilities related to uncertain tax positions |  |  |  | $ | 7,633 |  |  |  |  | $ | 7,002 |  |  |  |  | $ | 5,254 |  |

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