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Employee Benefit Plans (Details 9) (Other postretirement benefit plans [Member], USD $)
In Thousands, unless otherwise specified |
12 Months Ended | ||
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Mar. 31, 2013
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Mar. 31, 2012
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Mar. 31, 2011
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Other postretirement benefit plans [Member]
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| Components of postretirement benefit income | |||
| Interest cost | $ 39 | $ 45 | $ 50 |
| Amortization of prior service benefit | (166) | (166) | (166) |
| Amortization of actuarial loss | 44 | 37 | 34 |
| Net postretirement benefit income | $ (83) | $ (84) | $ (82) |
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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 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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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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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- Details
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