Employee Benefit Plans - Reclassifications from Accumulated Other Comprehensive Income (Detail) $ in Thousands	3 Months Ended
Mar. 30, 2019 USD ($)
Retirement Benefits [Abstract]
Amortization of actuarial loss - total before tax	$ 221
Tax benefit	(51)
Net of tax	$ 170

Amount, before tax, of reclassification adjustment from accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
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