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Time-Based Restricted Stock Units Activity (Detail) - Time-Based Restricted Stock Units
$ / shares in Units, shares in Thousands, $ in Thousands
6 Months Ended
Jul. 13, 2019
USD ($)
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Shares granted | shares 288
Shares, Forfeitures | shares (9)
Shares, Balance at end of period | shares 279
Weighted Average Fair Value, Granted | $ / shares $ 19.01
Weighted Average Fair Value, Forfeitures | $ / shares 18.29
Weighted Average Fair Value, Balance at end of period | $ / shares $ 19.03
Weighted Average Remaining Contractual Term (Years) 2 years 9 months 10 days
Unrecognized Compensation Cost | $ $ 5,471