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Shareholders' Equity (Tables) | 12 Months Ended
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Jun. 30, 2017
Stockholders' Equity Note [Abstract] |
Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] | Changes in the accumulated other comprehensive income (loss) for the years ended June 30, 2017, 2016 and 2015, are comprised of the following amounts, shown net of taxes:
| Foreign currency translation adjustment |  |  | Unrealized gain (loss) on securities available for sale |  |  | Postemployment benefits |  |  | Total accumulated other comprehensive (loss) income |
Balance at July 1, 2014 | $ | 989 |  |  | $ | 21 |  |  | $ | (2,625 | ) |  | $ | (1,615 | )
Other comprehensive loss | (58,233 | ) |  | (25 | ) |  | (472 | ) |  | (58,730 | )
Amounts reclassified from accumulated other comprehensive income (loss) | — |  |  | — |  |  | 174 |  |  | 174 |
Net current-period other comprehensive loss | (58,233 | ) |  | (25 | ) |  | (298 | ) |  | (58,556 | )
Balance at June 30, 2015 | (57,244 | ) |  | (4 | ) |  | (2,923 | ) |  | (60,171 | )
Other comprehensive loss | (24,441 | ) |  | (34 | ) |  | (1,215 | ) |  | (25,690 | )
Amounts reclassified from accumulated other comprehensive income (loss) | — |  |  | — |  |  | 315 |  |  | 315 |
Net current-period other comprehensive loss | (24,441 | ) |  | (34 | ) |  | (900 | ) |  | (25,375 | )
Balance at June 30, 2016 | (81,685 | ) |  | (38 | ) |  | (3,823 | ) |  | (85,546 | )
Other comprehensive income | 2,238 |  |  | 59 |  |  | 1,239 |  |  | 3,536 |
Amounts reclassified from accumulated other comprehensive income (loss) | — |  |  | — |  |  | 308 |  |  | 308 |
Net current-period other comprehensive income | 2,238 |  |  | 59 |  |  | 1,547 |  |  | 3,844 |
Balance at June 30, 2017 | $ | (79,447 | ) |  | $ | 21 |  |  | $ | (2,276 | ) |  | $ | (81,702 | )
Schedule of Comprehensive Income (Loss) | Details of other comprehensive income (loss) are as follows:
Year Ended June 30, | 2017 |  | 2016 |  | 2015
| Pre-Tax Amount |  |  | Tax Expense |  |  | Net Amount |  |  | Pre-Tax Amount |  |  | Tax (Benefit) Expense |  |  | Net Amount |  |  | Pre-Tax Amount |  |  | Tax (Benefit) Expense |  |  | Net Amount |
Foreign currency translation adjustments | $ | 2,238 |  |  | $ | — |  |  | $ | 2,238 |  |  | $ | (24,441 | ) |  | $ | — |  |  | $ | (24,441 | ) |  | $ | (58,233 | ) |  | $ | — |  |  | $ | (58,233 | )
Postemployment benefits: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Actuarial gain (loss) on remeasurement | 2,038 |  |  | 799 |  |  | 1,239 |  |  | (1,998 | ) |  | (783 | ) |  | (1,215 | ) |  | (776 | ) |  | (304 | ) |  | (472 | )
Reclassification of actuarial losses and prior service cost into SD&A expense and included in net periodic pension costs | 506 |  |  | 198 |  |  | 308 |  |  | 518 |  |  | 203 |  |  | 315 |  |  | 286 |  |  | 112 |  |  | 174 |
Unrealized gain (loss) on investment securities available for sale | 91 |  |  | 32 |  |  | 59 |  |  | (52 | ) |  | (18 | ) |  | (34 | ) |  | (38 | ) |  | (13 | ) |  | (25 | )
Other comprehensive income (loss) | $ | 4,873 |  |  | $ | 1,029 |  |  | $ | 3,844 |  |  | $ | (25,973 | ) |  | $ | (598 | ) |  | $ | (25,375 | ) |  | $ | (58,761 | ) |  | $ | (205 | ) |  | $ | (58,556 | )
Computation of basic and diluted earnings per share |
Year Ended June 30, | 2017 |  |  | 2016 |  |  | 2015 |
Net Income | $ | 133,910 |  |  | $ | 29,577 |  |  | $ | 115,484 |
Average Shares Outstanding: |  |  |  |  |
Weighted-average common shares outstanding for basic computation | 39,013 |  |  | 39,254 |  |  | 40,892 |
Dilutive effect of potential common shares | 391 |  |  | 212 |  |  | 295 |
Weighted-average common shares outstanding for dilutive computation | 39,404 |  |  | 39,466 |  |  | 41,187 |
Net Income Per Share — Basic | $ | 3.43 |  |  | $ | 0.75 |  |  | $ | 2.82 |
Net Income Per Share — Diluted | $ | 3.40 |  |  | $ | 0.75 |  |  | $ | 2.80 |

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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- Definition Tabular disclosure of information about items reclassified out of accumulated other comprehensive income (loss). + References No definition available. + Details
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- Definition Tabular disclosure of components of comprehensive income (loss). Includes, but is not limited to, foreign currency translation adjustments, foreign currency transactions designated as economic hedges of a net investment in foreign entity, gain (loss) and prior service cost (credit) for pension plans and other postretirement benefit plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=84228862&loc=d3e526-108580 + Details
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