Income Taxes - Schedule of Provision for Taxes on Income and Other Related Income Before Taxes (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	[2]	Sep. 30, 2018	[2]	Jun. 30, 2018	[2]	Mar. 31, 2018	[2]	Dec. 31, 2019		Dec. 31, 2018		Dec. 31, 2017
Federal
Current														$ 9,998		$ (296)		$ 32,299
Deferred	[1]													(2,879)		8,876		(3,690)
State
Current														2,248		2,095		1,764
Deferred	[1]													(1,783)		1,821		587
Foreign
Current														15,568		14,510		13,077
Deferred														(354)		(342)		2,102
Total	[1]													22,798		26,664		46,139
Income before Taxes
Domestic	[1]													63,399		86,368		80,307
Foreign														62,500		51,401		66,575
Income Before Provision for Income Taxes		$ 27,886	$ 27,449	$ 39,534	$ 31,030	$ 30,585		$ 24,694		$ 43,198		$ 39,292		$ 125,899	[1],[3]	$ 137,769	[1],[2],[3]	$ 146,882	[1],[3]

[1] 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.

[2] 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

[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