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Retirement Benefit Plans (Details) (USD $)
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3 Months Ended | 9 Months Ended | ||
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Mar. 31, 2013
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Mar. 31, 2012
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Mar. 31, 2013
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Mar. 31, 2012
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| Components of net periodic pension expense | ||||
| Service cost | $ 269,000 | $ 160,000 | $ 853,000 | $ 515,000 |
| Amortization of prior service cost | 229,000 | 112,000 | 689,000 | 336,000 |
| Net periodic pension expense | 498,000 | 272,000 | 1,542,000 | 851,000 |
| Contributions made by the entity to defined benefit plans | 100,000 | 500,000 | 100,000 | 600,000 |
| Contributions made by the entity to defined contribution plans | $ 900,000 | $ 900,000 | $ 2,700,000 | $ 3,000,000 |
| X | ||||||||||
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- Definition
The amount of gains or losses recognized in net periodic benefit cost. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The increase in the fair value of plan assets from contributions made by the employer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The amount of the cost recognized during the period for defined contribution plans. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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