Earnings Per Share and Shareholders Equity - Additional Information (Detail) - USD ($)	3 Months Ended			12 Months Ended	42 Months Ended
	Mar. 30, 2018	Dec. 29, 2017	Dec. 30, 2016	Sep. 29, 2017	Dec. 29, 2017	Mar. 31, 2015	Jun. 19, 2014
Earnings Per Share And Shareholders Equity [Line Items]
Anti-dilutive shares excluded from computation of earnings per share			809,875
Preferred stock shares authorized		25,000			25,000
Preferred stock, par value		$ 100			$ 100
Common stock, shares authorized		60,000,000		60,000,000	60,000,000
Common stock, par value		$ 0.20		$ 0.20	$ 0.20
Preferred stock shares outstanding		0		0	0
Approved and authorized amount under the stock repurchase program						$ 400,000,000	$ 200,000,000
Additional approved and authorized amount under the stock repurchase program						$ 200,000,000
Stock repurchased during period, shares		287,500	0	0	3,737,327
Average price paid per share of repurchased stock		$ 71.11
Aggregate value of repurchased stock		$ 20,400,000			$ 352,000,000
Stock repurchase program, remaining authorized amount available for repurchase in future			$ 48,000,000
Subsequent Event
Earnings Per Share And Shareholders Equity [Line Items]
Stock repurchased during period, shares	313,900
Average price paid per share of repurchased stock	$ 72.25
Aggregate value of repurchased stock	$ 23,000,000
Series B Preferred Stock
Earnings Per Share And Shareholders Equity [Line Items]
Preferred stock shares authorized		475,000			475,000
Preferred stock, par value		$ 1.00			$ 1.00
Preferred stock shares outstanding		0		0	0