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Retirement Benefit Plans (Details) (USD $) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2014 | Dec. 31, 2013
Net Periodic Benefit Costs |  |  |  |
Service costs | $ 266,000 us-gaap_DefinedBenefitPlanServiceCost | $ 309,000 us-gaap_DefinedBenefitPlanServiceCost | $ 530,000 us-gaap_DefinedBenefitPlanServiceCost | $ 602,000 us-gaap_DefinedBenefitPlanServiceCost
Amortization of prior service costs | 202,000 us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit | 202,000 us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit | 404,000 us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit | 404,000 us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit
Net periodic pension expense | 468,000 us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost | 511,000 us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost | 934,000 us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost | 1,006,000 us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost
Contributions made by the entity to the defined benefit plans | 0 us-gaap_DefinedBenefitPlanContributionsByEmployer | 800,000 us-gaap_DefinedBenefitPlanContributionsByEmployer | 1,000,000 us-gaap_DefinedBenefitPlanContributionsByEmployer | 900,000 us-gaap_DefinedBenefitPlanContributionsByEmployer
Contributions made by the entity to defined contribution plans | $ 1,100,000 us-gaap_DefinedContributionPlanCostRecognized | $ 1,000,000 us-gaap_DefinedContributionPlanCostRecognized | $ 2,200,000 us-gaap_DefinedContributionPlanCostRecognized | $ 2,000,000 us-gaap_DefinedContributionPlanCostRecognized

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- Definition The amount of the prior service cost or credit recognized in net periodic benefit cost relating to benefit changes attributable to plan participants' prior service pursuant to a plan amendment or a plan initiation. + 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)(1) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 + Details
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- Definition The increase in the fair value of plan assets from contributions made by the employer. + 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 (b)(3) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 + Details
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- Definition The total amount of net periodic benefit cost for defined benefit plans for the period. Periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) 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 (j) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 Reference 2: 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=35743120&loc=d3e1928-114920 + Details
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- Details
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- Definition The actuarial present value of benefits attributed by the pension benefit formula to services rendered by employees during the period. The portion of the expected postretirement benefit obligation attributed to employee service during the period. The service cost component is a portion of the benefit obligation and is unaffected by the funded status of the plan. + 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)(1) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Service Cost (Component of Net Periodic Pension Cost) -URI http://asc.fasb.org/extlink&oid=6525008 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 + Details
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- Definition The amount of the cost recognized during the period for defined contribution plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6414718&loc=d3e28014-114942 + Details
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