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Deferred Compensation And Retirement Plans (Components Of Net Periodic Benefit Costs) (Detail) (Pension Plans, Defined Benefit, USD $)
In Thousands, unless otherwise specified |
12 Months Ended | ||
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Apr. 30, 2013
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Apr. 30, 2012
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Apr. 30, 2011
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Pension Plans, Defined Benefit
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| Defined Benefit Plan Disclosure [Line Items] | |||
| Interest cost | $ 154 | $ 189 | $ 197 |
| Amortization of actuarial (gain) loss | 18 | 47 | (2) |
| Net periodic benefit cost | $ 172 | $ 236 | $ 195 |
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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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- Details
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- Definition
The increase in a defined benefit pension plan's projected benefit obligation or a defined benefit postretirement plan's accumulated postretirement benefit obligation due to the passage of time. 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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