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, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Income Before Provision for Income Taxes		$ 29,312	$ 27,143	$ 110,705	$ 106,807
Tax benefit	[1]	(7,459)	(5,776)	(29,044)	(29,020)
Interest, net		(2,763)	(2,824)	(8,618)	(9,855)
Cost of Sales		412,212	361,635	1,193,518	1,075,705
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	[2],[3]	(835)	(794)	(2,598)	(2,598)
Tax benefit	[2]	296	297	927	972
Income applicable to common stock	[2]	(539)	(497)	(1,671)	(1,626)
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	(4)	7	(13)
Tax benefit	[2]		2		6
Income applicable to common stock	[2]	2	(2)	7	(7)
Cash Flow Hedge Adjustments [Member] | Interest rate contracts [Member] | Amounts Reclassified From Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Interest, net	[2]		(7)		(20)
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
AOCI Attributable to Parent [Member]
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Income applicable to common stock	[2]	$ (537)	$ (499)	$ (1,664)	$ (1,633)

[1] The 2016 amounts for the noted items have been immaterially changed from the amounts originally reported as a result of the Company’s fourth quarter 2016 adoption of Accounting Standards Update (ASU) No. 2016-9, Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting.

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

[3] This component of accumulated other comprehensive income is included in the computation of net periodic benefit cost (see Note 8 for additional details).