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Stock-Based Compensation - Summary of RSU Activity (Detail) - Restricted Stock Units (RSUs) [Member]
shares in Thousands
3 Months Ended
Mar. 28, 2021
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Number of RSUs, Non-vested, beginning balance | shares | shares 994
Number of shares, Granted 179
Number of RSUs, Vested (22)
Number of RSUs, Canceled (13)
Number of RSUs, Non-vested, ending balance | shares | shares 1,138
Weighted Average Fair Value per Share, Non-vested, beginning balance | $ / shares $ 3.35
Weighted Average Fair Value per Share, Granted | $ / shares 5.60
Weighted Average Fair Value per Share, Vested | $ / shares 6.02
Weighted Average Fair Value per Share, Non-vested, ending balance | $ / shares $ 3.59