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Schedule of Amounts Recognized in Accumulated Other Comprehensive Income (Detail) $ in Thousands	Dec. 31, 2017 USD ($)
Pension Plans, Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Unrecognized actuarial (loss) gain	$ (1,939)
Pre-tax amount included in accumulated other comprehensive (loss) income	(1,939)
Other Pension Plans, Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Unrecognized actuarial (loss) gain	(325)
Unrecognized prior service credit (cost)	1,861
Pre-tax amount included in accumulated other comprehensive (loss) income	$ 1,536

X

- Definition

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

+ References

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-Publisher FASB
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-Topic 220
-SubTopic 10
-Section 45
-Paragraph 10A
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- Definition

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, before 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).

+ References

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