Accumulated Other Comprehensive Income (Loss) - Summary of Amounts Reclassified Out of Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Income Before Provision for Income Taxes		$ 171,067	$ 125,899	$ 137,769
Tax benefit		(43,411)	(22,798)	(26,664)
Cost of Sales		1,486,137	1,519,031	1,654,508
Defined Benefit Pension Plan Adjustments [Member] | Amounts Reclassified From Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Prior service cost	[1]	(11)	(12)	(12)
Actuarial loss	[1]	(4,421)	(2,739)	(4,059)
Income Before Provision for Income Taxes	[1],[2]	(4,432)	(2,751)	(4,071)
Tax benefit	[1]	1,092	660	981
Income applicable to common stock	[1]	(3,340)	(2,091)	(3,090)
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	[1]	9	9	10
Income applicable to common stock	[1]	9	9	10
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	[1]	9	9	10
Accumulated Other Comprehensive Income (Loss) [Member]
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Income applicable to common stock	[1]	$ (3,331)	$ (2,082)	$ (3,080)

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

[2] This component of accumulated other comprehensive income is included in the computation of net periodic benefit cost (see Note 13 for details regarding net periodic benefit costs for the Company’s U.S. and U.K. defined benefit plans).