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Changes in Accumulated Other Comprehensive Loss - The Reclassifications Out of Accumulated Other Comprehensive Loss by Component (Detail) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
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Dec. 31, 2013
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Dec. 31, 2012
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Dec. 31, 2013
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Dec. 31, 2012
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| Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] | ||||
| Income before provision for income taxes | $ 2,009 | $ 3,934 | $ 11,473 | $ 9,878 |
| Provision for income taxes | 578 | 887 | 3,645 | 2,826 |
| Net income | 1,431 | 3,047 | 7,828 | 7,052 |
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Reclassifications Out of Accumulated Other Comprehensive Loss [Member] | Amortization of Unrecognized Prior Service Benefit [Member]
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| Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] | ||||
| Income before provision for income taxes | 40 | 121 | ||
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Reclassifications Out of Accumulated Other Comprehensive Loss [Member] | Amortization of Actuarial Loss [Member]
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| Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] | ||||
| Income before provision for income taxes | (261) | (784) | ||
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Reclassifications Out of Accumulated Other Comprehensive Loss [Member] | Pension and Other Postretirement Benefits Items [Member]
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| Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] | ||||
| Income before provision for income taxes | (221) | (663) | ||
| Provision for income taxes | (78) | (234) | ||
| Net income | $ (143) | $ (429) | ||