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Common Stock - Options Exercised (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Exercise of Stock Options
Exercise of stock options (in shares)	293,439	124,931	29,288
Proceeds from exercise of options	$ 6,400	$ 2,900	$ 600
Tax Benefits and Deficits on Stock Option Exercises and Restricted Share Vesting
Tax (benefits) deficits on stock options exercises and restricted share vesting	$ 2,200
Tax benefits and deficits on stock options exercises and restricted share vesting		$ 171	$ 376

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Amount of increase (decrease) in additional paid in capital (APIC) resulting from a tax benefit (deficiency) associated with an share-based compensation plan other than an employee stock ownership plan (ESOP).

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Amount of decrease in additional paid in capital (APIC) resulting from a tax deficiency associated with a share-based compensation plan other than an employee stock ownership plan (ESOP).

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Amount of cash inflow from exercise of stock options granted under share-based compensation arrangement.

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