Annual report pursuant to Section 13 and 15(d)

Employee Benefit Plans - Summary of Benefit Payments, Which Reflect Future Service, are Expected to be Paid (Detail)

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Employee Benefit Plans - Summary of Benefit Payments, Which Reflect Future Service, are Expected to be Paid (Detail) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2014
Pension Plans, Defined Benefit [Member]
 
Defined Benefit Plan Disclosure [Line Items]  
2015 $ 1,260
2016 1,253
2017 1,359
2018 1,447
2019 1,477
2020-2024 8,711
Total 15,507
Other Postretirement Benefit Plans [Member]
 
Defined Benefit Plan Disclosure [Line Items]  
2015 98
2016 93
2017 88
2018 82
2019 77
2020-2024 309
Total $ 747