Accumulated Other Comprehensive Income (Loss) - Summary of Amounts Reclassifications Out of Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Income Before Provision for Income Taxes		$ 39,316	$ 43,398	$ 150,300	$ 126,711
Tax benefit		(2,393)	(10,056)	(29,463)	(29,987)
Cost of Sales		510,792	367,423	1,423,382	1,100,195
Defined Benefit Pension Plan Adjustments [Member] | Amounts Reclassified From Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Amortization of defined benefit pension actuarial losses	[1],[2]	(1,063)	(1,111)	(3,386)	(3,253)
Tax benefit	[2]	263	272	836	798
Income applicable to common stock	[2]	(800)	(839)	(2,550)	(2,455)
Cash Flow Hedge Adjustments [Member] | Amounts Reclassified From Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Income Before Provision for Income Taxes	[2]	2	3	7	7
Income applicable to common stock	[2]	2	3	7	7
Cash Flow Hedge Adjustments [Member] | Foreign exchange contracts [Member] | Amounts Reclassified From Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Cost of Sales	[2]	2	3	7	7
Accumulated Other Comprehensive Income (Loss) [Member]
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Income applicable to common stock	[2]	$ (798)	$ (836)	$ (2,543)	$ (2,448)

[1] This component of accumulated other comprehensive income is included in the computation of net periodic benefit cost.  See Note 9, Postretirement Benefit Plans, of the notes to the Company’s condensed consolidated financial statements (included in Item 1 of this Form 10-Q) for additional details.

[2] Amounts in parentheses denote expense to statement of income.