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

No definition available.

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

No definition available.

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

No definition available.

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Amount, after tax, of accumulated other comprehensive (income) loss for defined benefit plan, that has not been recognized in net periodic benefit cost (credit).

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Amount of actuarial present value of benefits attributed to employee service rendered, excluding assumptions about future compensation level.

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Amount, before tax, of accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit.

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Amount, after tax, of accumulated other comprehensive (income) loss for cost (credit) of benefit change attributable to participants' prior service from plan amendment or plan initiation of defined benefit plan, that has not been recognized in net periodic benefit cost (credit).

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Amount of actuarial present value of benefits attributed to service rendered by employee for defined benefit plan.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee.

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- References

No definition available.

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Amount of accumulated benefit obligation for defined benefit plan with accumulated benefit obligation in excess of plan assets.

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Amount of plan asset for defined benefit plan with accumulated benefit obligation in excess of plan assets.

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Amount of projected benefit obligation for defined benefit pension plan with accumulated benefit obligation in excess of plan assets.

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