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Retirement Benefit Plans (Tables) | 6 Months Ended
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Dec. 31, 2016
Retirement Benefit Plans |
Schedule of net periodic pension expense | The components of net periodic pension expense are as follows (in thousands):
|  | Three Months Ended December 31, |  | Six Months Ended December 31, |
|  | 2015 |  | 2016 |  | 2015 |  | 2016 |
Service cost |  | $ | 212 |  | $ | 224 |  | $ | 425 |  | $ | 448 |
Interest cost |  | 8 |  | 7 |  | 17 |  | 14 |
Amortization of prior service cost |  | 105 |  | 70 |  | 210 |  | 140 |
Net periodic pension expense |  | $ | 325 |  | $ | 301 |  | $ | 652 |  | $ | 602 |

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- Definition Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments. + 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 (h) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 + Details
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