Information For the Pension Plan With Respect To Accumulated Benefit Obligation and Plan Assets (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Asset [Line Items]
Projected benefit obligation	$ 4,831	$ 4,163
Accumulated benefit obligation	3,298	2,806
Fair value of plan assets	$ 3,205	$ 2,813

If aggregate disclosures are presented, the aggregate pension accumulated benefit obligation for pension plans with accumulated benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented.

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If aggregate disclosures are presented, the aggregate fair value of plan assets for pension plans with accumulated benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented.

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- Definition

If aggregate disclosures are presented, the aggregate projected benefit obligation for pension plans with accumulated benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented.

+ References+ Details