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Stock-Based Compensation - Non-vested Restricted Share Unit Activity (Details) - Restricted share units
12 Months Ended
Dec. 29, 2020
$ / shares
shares
Restricted Share Units  
Beginning balance (in shares) | shares 742,581
Granted (in shares) | shares 886,227
Vested (in shares) | shares (268,807)
Forfeited (in shares) | shares (204,675)
Ending balance (in shares) | shares 1,155,326
Weighted-Average Grant Date Fair Value  
Beginning balance (USD per share) | $ / shares $ 7.60
Weighted-average fair value per share at grant date (USD per share) | $ / shares 5.77
Vested (USD per share) | $ / shares 7.45
Forfeited (USD per share) | $ / shares 7.27
Ending balance (USD per share) | $ / shares $ 6.29