XML 44 R33.htm IDEA: XBRL DOCUMENT v3.20.2
The Company and Basis of Presentation - Liquidity (Details)
 3 Months Ended 6 Months Ended
Jul. 21, 2020
USD ($)
shares
Jun. 22, 2020
USD ($)
$ / shares
shares
May 06, 2020
USD ($)
Dec. 23, 2019
Nov. 06, 2019
Jun. 21, 2019
USD ($)
$ / shares
shares
Jun. 28, 2020
USD ($)
$ / shares
shares
Jun. 30, 2019
shares
 [1]
Jun. 28, 2020
USD ($)
$ / shares
Jun. 30, 2019
USD ($)
Dec. 29, 2019
USD ($)
$ / shares
Liquidity [Line Items]                      
Cash, cash equivalents and restricted cash             $ 26,400,000   $ 26,400,000    
Revolving line of credit             $ 15,000,000   15,000,000   $ 15,000,000
Loan proceed received                 $ 1,191,000    
Common stock, par value (in dollars per share) | $ / shares   $ 0.001       $ 0.001 $ 0.001   $ 0.001   $ 0.001
Shares issued price per share (in dollars per share) | $ / shares   $ 3.50       $ 7.00          
Proceeds from issuance of common stock, net of issuance costs   $ 7,900,000       $ 8,000,000.0     $ 7,847,000 $ 8,548,000  
Reverse stock split ratio       0.0714         0.0714    
Reverse stock split description             1-for-14   1-for-14    
Subsequent Event                      
Liquidity [Line Items]                      
Proceeds from issuance of common stock, net of issuance costs $ 461,000                    
Common Stock                      
Liquidity [Line Items]                      
Common stock offering, net of issuance costs (in shares) | shares             2,500,000 1,314,000      
Common Stock | Underwritten Public Offering                      
Liquidity [Line Items]                      
Common stock offering, net of issuance costs (in shares) | shares   2,500,000       1,300,000          
Common Stock | Exercise of Option for Overallotment of Shares by Underwriters                      
Liquidity [Line Items]                      
Common stock offering, net of issuance costs (in shares) | shares   375,000       171,429          
Common Stock | Exercise of Option for Overallotment of Shares by Underwriters | Subsequent Event                      
Liquidity [Line Items]                      
Common stock offering, net of issuance costs (in shares) | shares 141,733                    
Paycheck Protection Program                      
Liquidity [Line Items]                      
Loan proceed received                 $ 1,200,000    
Heritage Bank | Revolving Line of Credit                      
Liquidity [Line Items]                      
Revolving line of credit             $ 15,000,000.0   $ 15,000,000.0   $ 15,000,000.0
Line of credit facility, maturity date         Sep. 28, 2021            
Line of credit facility, expiration period         1 year            
Line of credit interest rate         0.50%            
Line of credit interest rate, one         5.50%            
Heritage Bank | Paycheck Protection Program                      
Liquidity [Line Items]                      
Line of credit facility, expiration period     2 years                
Line of credit interest rate     1.00%                
Loan amount     $ 1,191,687.77                
[1]

Common stock shares and additional paid-in capital amounts as of December 31, 2018, and in the three-months ended March 31, 2019 and June 30, 2019 are adjusted to reflect 1-for-14 reverse stock split effected on December 23, 2019.