Income Taxes - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 28, 2019
Income Taxes [Line Items]
Operating loss carryforwards, limitations on use	These ownership changes may limit the amount of carryforwards that can be utilized annually to offset future taxable income or tax liabilities. In general, an ownership change, as defined by Section 382, results from transactions increasing the ownership of certain stockholders or public groups in the stock of a corporation by more than 50% over a three-year period.
Valuation allowance	$ 116,164,000	$ 101,029,000	$ 95,024,000
Increase in valuation allowance	15,100,000
Unrecognized tax benefits	0	0
Unrecognized tax benefits, related interest and penalties accrued	0	0
Accrued interest or penalties related to uncertain tax positions	$ 0	0
Earliest Tax Year [Member]
Income Taxes [Line Items]
Open Tax Year	2018
U.S. Federal [Member]
Income Taxes [Line Items]
Operating loss carryforwards	$ 368,100,000
Operating loss carryforwards begin to expire	2022
State [Member]
Income Taxes [Line Items]
Operating loss carryforwards	$ 304,000,000.0
Operating loss carryforwards begin to expire	2030
Foreign [Member]
Income Taxes [Line Items]
Operating loss carryforwards	$ 0
Research and Development Tax Credits [Member]
Income Taxes [Line Items]
Income tax benefits	0	0
Research and Development Tax Credits [Member] | U.S. Federal [Member]
Income Taxes [Line Items]
Tax credit carryforwards	$ 8,000,000.0
Tax credits carryforwards begin to expire	2022
Research and Development Tax Credits [Member] | State [Member]
Income Taxes [Line Items]
Tax credit carryforwards	$ 5,300,000
Tax credits carryforwards begin to expire	2024
Non-expirable [member] | U.S. Federal [Member]
Income Taxes [Line Items]
Operating loss carryforwards	$ 156,400,000
Net Operating Loss [Member]
Income Taxes [Line Items]
Income tax benefits	0	0
Maximum [Member]
Income Taxes [Line Items]
Foreign income tax provision	$ 100,000	$ 100,000