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Earnings Per Share - Schedule of Computation of Basic and Diluted Earnings Per Share from Continuing Operations (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 13, 2019	Jul. 14, 2018	Jul. 13, 2019	Jul. 14, 2018
Numerator:
(Loss) earnings from continuing operations	$ (6,767)	$ 17,838	$ 754	$ 30,273
Adjustment for loss (earnings) attributable to participating securities	172	(414)	(19)	(644)
(Loss) earnings from continuing operations used in calculating earnings per share	$ (6,595)	$ 17,424	$ 735	$ 29,629
Denominator:
Weighted average shares outstanding, including participating securities	36,323	35,928	36,208	36,075
Adjustment for participating securities	(921)	(833)	(897)	(767)
Shares used in calculating basic (loss) earnings per share	35,402	35,095	35,311	35,308
Effect of dilutive stock options		13		12
Shares used in calculating diluted (loss) earnings per share	35,402	35,108	35,311	35,320
Basic (loss) earnings per share from continuing operations	$ (0.19)	$ 0.50	$ 0.02	$ 0.84
Diluted (loss) earnings per share from continuing operations	$ (0.19)	$ 0.50	$ 0.02	$ 0.84

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Amount after tax of income (loss) from continuing operations attributable to the parent.

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