Equity - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Dec. 26, 2015	Dec. 11, 2017	May 19, 2015
Equity [Line Items]
Shares authorized for repurchase				1,963,875	3,000,000
Remaining shares available for repurchase	3,000,000
Total cost of repurchase of common stock	$ 0	$ 50,516	$ 161,152
Preferred stock, shares authorized and unissued	2,000,000
Treasury Stock
Equity [Line Items]
Common stock repurchased during period, shares	0	773,281	2,497,748