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Employee Benefit Plans - Summary of Amounts Recognized in Accumulated Other Comprehensive Loss, Net of Income Tax (Detail) (USD $) In Thousands, unless otherwise specified | Mar. 31, 2014 | Mar. 31, 2013 | Mar. 31, 2012
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Pension Plans, Defined Benefit [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Net actuarial loss | $ 5,939 | $ 8,278 |
Prior service cost | 2 | 5 |
Total | 5,941 | 8,283 | 8,515
Other Postretirement Benefit Plans [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Net actuarial loss | 295 | 336 |
Prior service cost | (68) | (176) |
Total | $ 227 | $ 160 | $ 20

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- Definition Defined benefit plan accumulated other comprehensive income net actuarial loss after tax. + References No definition available. + Details
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- Definition After tax total of net gain (loss), prior service cost (credit), and transition assets (obligations), as well as minimum pension liability if still remaining, included in accumulated other comprehensive income associated with a defined benefit pension or other postretirement plan(s). + References No definition available. + Details
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- Definition Amount after tax of cost (credit) due to benefit changes attributable to plan participants' prior service pursuant to a plan amendment or a plan initiation, which has not yet been recognized as a component of net periodic benefit cost. + References No definition available. + Details
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- Details
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