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Employee Benefit Plans - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013
Compensation And Retirement Disclosure [Abstract]
Expected contribution for defined benefit plans and other postretirement plans	$ 2.2

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- Details

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- Definition

The employer's best estimate, as soon as it can be reasonably determined, of contributions expected to be paid to the plan in the current remaining fiscal period. Estimated contributions may be presented in the aggregate combining (1) contributions required by funding regulations or laws, (2) discretionary contributions, and (3) noncash contributions.

+ References

No definition available.

+ Details

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