Accumulated Other Comprehensive Income (Loss) - Summary of Amounts Reclassified Out of Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Thousands		3 Months Ended												12 Months Ended
		Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	[1]	Sep. 30, 2018	[1]	Jun. 30, 2018	[1]	Mar. 31, 2018	[1]	Dec. 31, 2019		Dec. 31, 2018		Dec. 31, 2017
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Income Before Provision for Income Taxes		$ 27,886	$ 27,449	$ 39,534	$ 31,030	$ 30,585		$ 24,694		$ 43,198		$ 39,292		$ 125,899	[2],[3]	$ 137,769	[1],[2],[3]	$ 146,882	[2],[3]
Tax benefit	[3]													(22,798)		(26,664)		(46,139)
Cost of Sales	[3]													1,519,031		1,654,508		1,578,840
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	[4]													(12)		(12)		(14)
Actuarial loss	[4]													(2,739)		(4,059)		(3,509)
Income Before Provision for Income Taxes	[4],[5]													(2,751)		(4,071)		(3,523)
Tax benefit	[4]													660		981		1,244
Income applicable to common stock	[4]													(2,091)		(3,090)		(2,279)
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	[4]													9		10		9
Income applicable to common stock	[4]													9		10		9
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	[4]													9		10		9
Accumulated Other Comprehensive Income (Loss) [Member]
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Income applicable to common stock	[4]													$ (2,082)		$ (3,080)		$ (2,270)

[1] The 2018 amounts for the noted line items have been retrospectively changed from the amounts originally reported as a result of the Company’s first quarter 2019 change in method of accounting for U.S. inventory valuation from LIFO to FIFO

[2] The 2018 and 2017 amounts for the noted line items have been retrospectively changed from the amounts originally reported as a result of the Company’s first quarter 2019 change in method of accounting for U.S. inventory valuation from LIFO to FIFO

[3] The 2018 and 2017 amounts for the noted line items have been retrospectively changed from the amounts originally reported as a result of the Company’s first quarter 2019 change in method of accounting for U.S. inventory valuation from LIFO to FIFO.

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

[5] This component of accumulated other comprehensive income is included in the computation of net periodic benefit cost (see Note 14 for details regarding net periodic benefit costs for the Company’s U.S. and U.K. defined benefit plans).