Quarterly report pursuant to Section 13 or 15(d)

Shareholders' Equity - Additional Information (Details)

v3.22.1
Shareholders' Equity - Additional Information (Details)
 3 Months Ended 12 Months Ended
Feb. 02, 2021
USD ($)
Jan. 29, 2021
USD ($)
$ / shares
shares
Apr. 02, 2022
USD ($)
$ / shares
shares
Apr. 03, 2021
USD ($)
shares
Jan. 01, 2022
$ / shares
shares
Jan. 02, 2021
shares
Shareholders Equity [Line Items]            
Common stock, shares authorized (in shares)     10,000,000   10,000,000  
Common stock, issued shares (in shares)     2,827,410   2,827,410  
Common stock, outstanding shares (in shares)     2,827,410   2,827,410  
Common stock par value | $ / shares     $ 0.001   $ 0.001  
Gross proceeds reimbursement for accountable legal expenses | $   $ 420,000        
Options outstanding     117,500   117,500 113,900
Options granted     0   38,000  
Number of shares converted     216,393      
Preferred Stock outstanding     238,729   238,729  
Stock Options            
Shareholders Equity [Line Items]            
Share-based compensation expense | $     $ 4,000,000 $ 109,000,000    
Unrecognized compensation expense, net of estimated forfeitures | $     $ 1,000,000      
Unrecognized compensation expense, net of estimated forfeitures, period for recognition     2022-07      
2016 Plan            
Shareholders Equity [Line Items]            
Options expiration date     Oct. 28, 2026      
Options authorized for issuance     800,000      
Options outstanding     90,000   90,000  
2011 Plan            
Shareholders Equity [Line Items]            
Options outstanding     27,500   27,500  
Additional awards to be granted after adoption of 2016 plan     0      
Series A1 Convertible Preferred Stock [Member]            
Shareholders Equity [Line Items]            
Conversion of Stock, Shares Issued     0      
Common Stock            
Shareholders Equity [Line Items]            
Preferred Stock, Convertible, Conversion Ratio     0.05      
Common Stock | Equity Offering            
Shareholders Equity [Line Items]            
Common stock, shares authorized (in shares)   571,428        
Common stock par value | $ / shares   $ 0.001        
Common stock purchase price per share | $ / shares   $ 10.50        
Common stock gross proceeds before deducting placement agent fees and offering expenses | $ $ 6,000,000.0          
Common Stock | Equity Offering | Placement Agency Agreement            
Shareholders Equity [Line Items]            
Percentage of cash fee gross proceeds   7.00%        
Common Stock | Equity Offering | Maximum | Placement Agency Agreement            
Shareholders Equity [Line Items]            
Gross proceeds reimbursement for accountable legal expenses | $   $ 35,000        
Series A Preferred            
Shareholders Equity [Line Items]            
Number of shares converted     4,635,539      
Preferred Stock outstanding     238,729   238,729  
Contractor            
Shareholders Equity [Line Items]            
Stock issued for services, shares     0 0    
Articles of Incorporation            
Shareholders Equity [Line Items]            
Common stock, shares authorized (in shares)     200,000,000