Annual report pursuant to Section 13 and 15(d)

Related Party Transactions (Detail)

v3.20.1
Related Party Transactions (Detail) - USD ($)
12 Months Ended
Jan. 02, 2020
Dec. 04, 2019
Jul. 23, 2019
Jan. 31, 2019
Jan. 14, 2019
Apr. 01, 2014
Dec. 31, 2019
Dec. 31, 2018
Jan. 09, 2019
Dec. 31, 2017
Related Party Transaction [Line Items]                    
Warrants outstanding             279,000 336,000   336,000
Exercise price of warrant (usd per share)             $ 104.18   $ 7.43  
Issuance of common stock (shares)   5,000                
Granted (shares)             20,000 29,000    
Granted (usd per share)             $ 5.89 $ 25.20    
Equity Dynamics, Inc.                    
Related Party Transaction [Line Items]                    
Related party consulting fees           $ 10,000        
Agreement with related party, consulting fee               $ 80,000    
Due to related party             $ 0 $ 70,000    
John Pappajohn                    
Related Party Transaction [Line Items]                    
Warrants outstanding             18,000 18,000    
Exercise price of warrant (usd per share)             $ 280.14 $ 280.14    
John Pappajohn | Private Placement                    
Related Party Transaction [Line Items]                    
Issuance of common stock (shares)       33,000 33,000          
Share price (usd per share)       $ 6.9 $ 6.75          
John Roberts, President and CEO | Private Placement                    
Related Party Transaction [Line Items]                    
Issuance of common stock (shares)       6,000 3,000          
Share price (usd per share)       $ 6.9 $ 6.75          
Geoffrey Harris, director | Private Placement                    
Related Party Transaction [Line Items]                    
Issuance of common stock (shares)         3,000          
Share price (usd per share)         $ 6.75          
Edmund Cannon, director | Private Placement                    
Related Party Transaction [Line Items]                    
Issuance of common stock (shares)       1,000            
Share price (usd per share)       $ 6.9            
M. Glenn Miles, CFO | Private Placement                    
Related Party Transaction [Line Items]                    
Issuance of common stock (shares)       5,000            
Share price (usd per share)       $ 6.9            
Nonemployee                    
Related Party Transaction [Line Items]                    
Director compensation     $ 263,000              
Stock options | Nonemployee                    
Related Party Transaction [Line Items]                    
Granted (shares)     3,000              
Common stock, vesting period     12 months              
Granted (usd per share)     $ 4.50              
Subsequent Event | M. Glenn Miles, CFO                    
Related Party Transaction [Line Items]                    
Stock options issued (shares) 10,000                  
Subsequent Event | Ralf Brandt                    
Related Party Transaction [Line Items]                    
Stock options issued (shares) 10,000                  
Subsequent Event | Stock options | Nonemployee                    
Related Party Transaction [Line Items]                    
Granted (shares) 20,000                  
Common stock, vesting period 12 months                  
Granted (usd per share) $ 5.53