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Stock Repurchase Program - Additional Information (Detail) - USD ($)	3 Months Ended			6 Months Ended		36 Months Ended
	Jun. 29, 2019	Jun. 30, 2018	Mar. 31, 2018	Jun. 29, 2019	Jun. 30, 2018	Sep. 01, 2018	Jul. 01, 2018	Sep. 01, 2015
Class of Stock [Line Items]
Stock Repurchase Program, Remaining Authorized Repurchase Amount	$ 4,800,000			$ 4,800,000
Shares repurchased(1)	208,000	0		208,000	196,000
Average cost per share	$ 134.03	$ 0		$ 134.03	$ 84.14
Value of shares repurchased	$ 27,854,000	$ 0	$ 16,490,000	$ 27,854,000	$ 16,490,000
2015 Repurchase Program
Class of Stock [Line Items]
Shares repurchased(1)						3,100,000
2015 Repurchase Program | Common Stock
Class of Stock [Line Items]
Number of common shares authorized to be repurchased under new stock repurchase program							5,000,000.0	5,000,000.0

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The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

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Amount remaining of a stock repurchase plan authorized.

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Total cost of shares repurchased divided by the total number of shares repurchased.

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Number of shares that have been repurchased during the period and are being held in treasury.

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Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

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