Preferred Stock, Common Stock and Stockholders' Equity - Equity Incentive Award Plans - Additional Information (Detail) - $ / shares			12 Months Ended
	Jan. 01, 2023	Apr. 26, 2018	Dec. 31, 2022	Dec. 31, 2021
Sale Of Stock [Line Items]
Aggregate number of shares of common stock reserved under the plan		323,869	675,396	708,449
Award plan expiration month and year		2028-02
Options available for future grant			146,497	121,974
Options granted, weighted average term			10 years
Number of stock options granted			78,247	140,167
Intrinsic value, common stock price			$ 2.68
Weighted Average Grant Date Fair Value Per Share, Granted			$ 4.86	$ 23.16
Minimum [Member]
Sale Of Stock [Line Items]
Options granted, vesting period			1 year
Maximum [Member]
Sale Of Stock [Line Items]
Options granted, vesting period			4 years
Amended and Restated Equity Incentive Plan 2013 [Member]
Sale Of Stock [Line Items]
Aggregate number of shares of common stock reserved under the plan		666,666
Shares available for issuance, description			In addition, the number of shares available for issuance is annually increased on the first day of each fiscal year by that number of shares equal to the least of (a) four percent of the outstanding shares of common stock on the last day of the immediately preceding calendar year, and (b) such other amount determined by the Company’s board of directors. Notwithstanding the foregoing, the number of shares of common stock that may be issued or transferred pursuant to incentive stock options under the Restated Plan may not exceed an aggregate of 666,666 shares.
Amended and Restated Equity Incentive Plan 2013 [Member] | Annual Increase in Shares [Member]
Sale Of Stock [Line Items]
Reserve percentage for issuance of shares		4.00%
2013 Equity Incentive Award Plan [Member]
Sale Of Stock [Line Items]
Increase in the number of shares of common stock reserved under the plan				618,494
Options available for future grant			146,497
Number of stock options granted			78,247
2013 Equity Incentive Award Plan [Member] | Subsequent Event
Sale Of Stock [Line Items]
Increase in the number of shares of common stock reserved under the plan	133,722
Options available for future grant	280,219