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		9 Months Ended
	Oct. 08, 2016	Oct. 10, 2015	Oct. 08, 2016	Oct. 10, 2015
Numerator:
Earnings from continuing operations	$ 16,730	$ 15,248	$ 44,250	$ 46,002
Adjustment for earnings attributable to participating securities	(292)	(259)	(785)	(806)
Earnings from continuing operations used in calculating earnings per share	$ 16,438	$ 14,989	$ 43,465	$ 45,196
Denominator:
Weighted average shares outstanding, including participating securities	37,470	37,553	37,479	37,617
Adjustment for participating securities	(654)	(639)	(665)	(659)
Shares used in calculating basic earnings per share	36,816	36,914	36,814	36,958
Effect of dilutive stock options	76	100	60	118
Shares used in calculating diluted earnings per share	36,892	37,014	36,874	37,076
Basic earnings per share from continuing operations	$ 0.45	$ 0.41	$ 1.18	$ 1.22
Diluted earnings per share from continuing operations	$ 0.45	$ 0.40	$ 1.18	$ 1.22