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Financial Liabilities - Additional Information (Detail)
5 Months Ended 9 Months Ended
Oct. 01, 2020
USD ($)
May 05, 2020
USD ($)
DividendYield
yr
Apr. 09, 2020
USD ($)
Jan. 28, 2020
USD ($)
Feb. 06, 2019
USD ($)
Feb. 08, 2017
USD ($)
Sep. 30, 2020
USD ($)
Sep. 30, 2020
USD ($)
Dec. 31, 2019
USD ($)
Debt Instrument [Line Items]                  
Team loan             $ 23,993,000 $ 23,993,000 $ 14,230,000
April 21 Funds Promissory Notes                  
Debt Instrument [Line Items]                  
Team loan             4,000,000 4,000,000  
Promissory notes principal amount   $ 4,000,000              
Interest rate   8.00%              
Debt instrument, frequency of periodic payment   quarterly              
Paycheck Protection Program Promissory Note                  
Debt Instrument [Line Items]                  
Proceeds from lines of credit     $ 2,900,000            
Team loan             2,915,000 $ 2,915,000  
Interest rate     1.00%            
Notes payable, description               The Company borrowed a principal amount of approximately $2.9 million. The interest on the Note is 1.00% per annum. The Note is payable two years from the date of the Note, and there is no prepayment penalty.  
Number of years note payable     2 years            
April 21 Funds Warrants | April 21 Funds Promissory Notes                  
Debt Instrument [Line Items]                  
Fair value of warrants   $ 290,000              
Estimated Volatility | Amended EWB Warrant                  
Debt Instrument [Line Items]                  
Warrant, measurement input   0.632              
Estimated Volatility | April 21 Funds Warrants                  
Debt Instrument [Line Items]                  
Warrant, measurement input   0.632              
Risk Free Interest Rate | Amended EWB Warrant                  
Debt Instrument [Line Items]                  
Warrant, measurement input   0.0024              
Risk Free Interest Rate | April 21 Funds Warrants                  
Debt Instrument [Line Items]                  
Warrant, measurement input   0.0024              
Dividend Yield | Amended EWB Warrant                  
Debt Instrument [Line Items]                  
Warrant, measurement input | DividendYield   0              
Dividend Yield | April 21 Funds Warrants                  
Debt Instrument [Line Items]                  
Warrant, measurement input | DividendYield   0              
Expected Life | Amended EWB Warrant                  
Debt Instrument [Line Items]                  
Warrant, measurement input | yr   3              
Expected Life | April 21 Funds Warrants                  
Debt Instrument [Line Items]                  
Warrant, measurement input | yr   3              
Period One | April 21 Funds Promissory Notes                  
Debt Instrument [Line Items]                  
Interest rate   12.00%              
Revolving Loan Facility                  
Debt Instrument [Line Items]                  
Team loan             13,828,000 $ 13,828,000 $ 14,230,000
Loan and Security Agreements | Amended EWB Warrant                  
Debt Instrument [Line Items]                  
Legal and administrative costs   $ 92,000              
Fair value of warrants   42,000              
Loan and Security Agreements | Revolving Loan Facility                  
Debt Instrument [Line Items]                  
Loan facility payable date         Feb. 08, 2021        
Line of credit facility early termination fee percentage               1.00%  
Loan and Security Agreements | Revolving Loan Facility | Prime Rate                  
Debt Instrument [Line Items]                  
Percentage of interest rate         0.75% 1.00%      
Loan and Security Agreements | EWB Term Loan                  
Debt Instrument [Line Items]                  
Borrowing capacity under credit facility       $ 15,500,000 $ 20,000,000        
Proceeds from lines of credit       4,500,000          
Loan facility, principal payment through first anniversary       250,000          
Legal and administrative costs       $ 90,000          
Loan and Security Agreements | EWB Term Loan | Prime Rate                  
Debt Instrument [Line Items]                  
Percentage of interest rate       2.25%          
Loan and Security Agreements | East West Bank                  
Debt Instrument [Line Items]                  
Team loan   $ 3,000,000         4,000,000 $ 4,000,000  
Minimum trailing six month EBITDA             $ 600,000    
Loan and Security Agreements | East West Bank | Subsequent Event                  
Debt Instrument [Line Items]                  
Minimum trailing six month EBITDA $ 300,000                
Loan and Security Agreements | East West Bank | Period One                  
Debt Instrument [Line Items]                  
Loan facility payable date   May 01, 2020              
Loan and Security Agreements | East West Bank | Period Two                  
Debt Instrument [Line Items]                  
Loan facility payable date   Jun. 01, 2020              
Loan and Security Agreements | East West Bank | Period Three                  
Debt Instrument [Line Items]                  
Loan facility payable date   Jul. 01, 2020              
Loan and Security Agreements | East West Bank | Revolving Loan Facility                  
Debt Instrument [Line Items]                  
Borrowing capacity under credit facility         $ 20,000,000 $ 16,000,000      
Loan and Security Agreements | Venture Lending & Leasing VII and VIII, Inc. | Term Loan                  
Debt Instrument [Line Items]                  
Borrowing capacity under credit facility           $ 10,000,000