Stockholders' Equity and Stock-Based Compensation - Summary of Stock Options Outstanding, Vested, Expected to Vest and Exercisable (Details) - USD ($) $ / shares in Units, $ in Thousands	Jul. 03, 2021	Jan. 02, 2021
Stock options outstanding, exercisable and expected to vest
Options outstanding, Number of Shares	1,548,400	1,649,540
Options vested and expected to vest, Number of Shares	1,388,531
Options exercisable, Number of Shares	697,847
Options outstanding, Weighted Average Exercise Price	$ 4.77	$ 4.67
Options vested and expected to vest, Weighted Average Exercise Price	4.84
Options exercisable, Weighted Average Exercise Price	$ 5.73
Options outstanding, Weighted Average Remaining Contractual Life (Years)	5 years 7 months 17 days
Options vested and expected to vest, Weighted Average Remaining Contractual Life (Years)	5 years 5 months 26 days
Options exercisable, Weighted Average Remaining Contractual Life (Years)	4 years 7 months 13 days
Options outstanding, Aggregate Intrinsic Value	$ 4,297
Options vested and expected to vest, Aggregate Intrinsic Value	3,815
Options exercisable, Aggregate Intrinsic Value	$ 1,599