Stock Incentive Plans - Additional Information (Details) - USD ($)							12 Months Ended
	Jan. 01, 2022	Jan. 01, 2021	Jan. 01, 2020	Jan. 01, 2019	Jan. 01, 2018	Oct. 31, 2017	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Jan. 22, 2021
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expense related to stock options granted							$ 3,671,000	$ 4,051,000	$ 2,989,000
Total intrinsic value of options exercised							$ 0	$ 8,000	$ 58,000
Common stock shares reserved for issuance							21,805,776	8,144,710
Employees and Directors
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted-average fair value of options granted							$ 1.41	$ 1.01	$ 3.29
Non-Employees
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of stock options granted							0	0	0
Stock Options | Employees and Directors
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expense related to stock options granted							$ 2,900,000	$ 2,600,000	$ 2,900,000
Restricted Stock Units (RSUs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expense related to stock options granted							$ 800,000	$ 1,500,000	$ 100,000
Weighted average fair value of awards granted							$ 1.29	$ 1.39	$ 2.42
2011 Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares authorized for grant						0
2011 Plan | Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based award, vesting period								4 years
2011 Plan | Stock Options | Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based award, expiration period							10 years
2017 Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock option grant effective date						Oct. 31, 2017
Share based award, description							Upon adoption of the 2017 Plan, no further grants were made under the 2011 Stock Incentive Plan (“2011 Plan”). The 2017 Plan initially provided for the grant of awards for 2,038,021 shares of common stock. In addition to the shares available for grant under the 2017 Plan, any awards outstanding under the 2011 Plan as of the October 31, 2017 that are cancelled, forfeited or otherwise terminated without being exercised, the number of shares underlying such awards are available for future grant under the 2017 Plan. The 2017 Plan also provides that an additional number of shares will automatically be added to the shares authorized for issuance under the 2017 Plan on January 1 of each year. The number of shares added each year will be equal to the lesser of: (i) 4% of the outstanding shares on the immediately preceding December 31 or (ii) such amount as determined by the Compensation Committee of the registrant’s Board of Directors. On January 1, 2020, 2021 and 2022, the shares available for grant under the 2017 Plan were automatically increased by 989,400, 2,032,854 and 3,318,776 shares, respectively.
Percentage criteria for additional shares granted						4.00%
Additional shares available for grant		2,032,854	989,400
2017 Plan | Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares available for future grant							798,476
Stock-based award, vesting period								4 years
2017 Plan | Stock Options | Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based award, expiration period							10 years
2017 Plan | Common Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares authorized for grant						2,038,021
2017 Plan | Subsequent Event
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Additional shares available for grant	3,318,776
2017 And 2011 Plans
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of stock options granted							3,341,350
Unrecognized stock-based compensation expense related to unvested employee stock options							$ 5,100,000
Unrecognized stock-based compensation expense, weighted average period for recognition							2 years 6 months
2021 Plan | Stock Options | Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based award, expiration period							10 years
2021 Plan | Common Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares authorized for grant										1,600,000
Shares available for future grant							808,000
2017 Employee Stock Purchase Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share based award, description							The Company adopted the 2017 Employee Stock Purchase Plan (“ESPP”) on October 31, 2017. The ESPP permits eligible employees to enroll in six-month offering periods. Participants may purchase shares of the Company’s common stock, through payroll deductions, at a price equal to 85% of the fair market value of the common stock on the first or last day of the applicable six-month offering period, whichever is lower. Purchase dates under the ESPP occur on or about January 1 and July 1 each year. The ESPP initially reserved 206,284 shares of common stock for issuance. The ESPP also provides that an additional number of shares will automatically be added to the shares authorized for issuance under the ESPP on January 1 of each year. The number of shares added each year will be equal to the lesser of: (i) 1% of the outstanding shares on the immediately preceding December 31 or (ii) such amount as determined by the Compensation Committee of the registrant’s Board of Directors. On January 1, 2018, the shares available for grant under the ESPP was automatically increased by 206,946 shares. No shares were added to the ESPP on January 1, 2019, 2020 and 2021.
Percentage criteria for additional shares granted						1.00%
Additional shares available for grant		0	0	0	206,946
ESPP effective date						Oct. 31, 2017
Initial offering period							The ESPP permits eligible employees to enroll in six-month offering periods.
Offering period permitted under plan for enrollment						6 months
Purchase price of common stock, percent						85.00%
Common stock shares reserved for issuance						206,284	306,527
Amount withheld from employees for purchase of common stock shares under plan							$ 18,000,000	$ 52,000
Common stock shares available for purchase under plan							30,383	43,095