Annual report pursuant to Section 13 and 15(d)

Liquidity (Details Narrative)

v3.20.4
Liquidity (Details Narrative) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended 12 Months Ended
Apr. 21, 2020
Jan. 31, 2020
Sep. 30, 2019
Nov. 30, 2018
Dec. 31, 2019
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Sep. 30, 2014
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Apr. 20, 2020
Mar. 31, 2020
Nov. 30, 2019
Jul. 31, 2019
Cash and cash equivalents         $ 2,321       $ 6,068                           $ 2,321 $ 6,068                
Accounts receivable, net         10,338       9,483                           10,338 9,483                
Total current assets         16,510       17,721                           16,510 17,721                
Total current liabilities         17,292       8,669                           17,292 8,669                
Net loss         10,663 $ 7,446 $ 5,304 $ 3,326 4,299 $ 3,126 $ 2,001 $ 3,277 $ 3,400 $ 6,390 $ (2,330) $ 8,003 $ 2,844 $ 5,296 $ 5,405 $ 7,488 $ 4,614 $ 4,454 26,740 12,703 $ (12,553) $ 22,003 $ 13,623 $ 16,768        
Net cash used in operating activities                                             18,957 8,673                
Line of credit facility         3,000                                 3,000                
Public offering generating net proceeds                                             $ 200                  
Sale of common stock                                             97,817                  
Stockholder's equity increased     $ 6,030   (4,479) $ 6,030 $ 13,346 $ 18,372 $ 15,446 $ 18,799 $ 21,406 $ 22,703 $ 19,484 $ 19,532 $ 7,843 $ (5,979) $ 2,003 $ 4,826 $ 3,400 $ 8,347 $ 15,183 $ 25,306 $ (4,479) $ 15,446 $ 22,891 $ (10,111) $ 10,067 $ 19,427        
Silicon Valley Bank [Member]                                                                
Line of credit facility       $ 850 $ 3,000                                   $ 3,000                  
Line of credit facility term loan       3 years                                                        
Line of credit facility, description       The proceeds of the term loan are expected to be used for laboratory capital expenditures and will be repaid monthly. The balance of the Line of Credit is available for working capital purposes as a revolving line of credit and has a three-year term. The borrowing limit of the revolving line of credit is the lower of 80% of the Company's eligible accounts receivable (as adjusted by SVB) and the aggregate amount of cash collections with respect to accounts receivable during the three prior calendar months.                                     The amount that may be borrowed under the Revolving Line is the lower of (i) $3.75 million or (ii) 80% of the Company's eligible accounts receivable (as adjusted by SVB). Revolving Line outstanding amounts incur interest at a rate per annum equal to the Wall Street Journal Prime Rate plus 0.5%. The Company is also required to pay an unused Revolving Line facility fee monthly in arrears in an amount equal to 0.35% per annum of the average unused but available portion of the Revolving Line. The term loan portion of the SVB Loan Agreement has a maturity date of May 2, 2022, and the Revolving Line has a maturity date three years from the effective date, or November 13, 2021                  
Line of credit, percentage       0.50%                                                        
Silicon Valley Bank [Member] | Prime Rate [Member]                                                                
Line of credit, percentage       5.00%                                     0.50%                  
Silicon Valley Bank [Member] | Maximum [Member]                                                                
Line of credit facility                                                             $ 4,000  
Subsequent Event [Member]                                                                
Line of credit facility                                                           $ 350    
Stockholder's equity increased   $ 47,000                                                            
Description for loans to qualifying businesses value and its term As of April 20, 2020, the Company's PPP loan has not yet been approved, pending new legislation increasing the pool. The PPP provides for loans to qualifying businesses for amounts up to 2.5 times of the average monthly payroll expenses of the qualifying business. The PPP loans and accrued interest are forgivable after eight weeks as long as the borrower uses the loan proceeds for eligible purposes, including payroll, benefits, rent and utilities, and maintains its payroll levels. The amount of loan forgiveness will be reduced if the borrower terminates employees or reduces salaries during the eight-week period. The unforgiven portion of the PPP loan is payable over two years at an interest rate of 1%, with a deferral of payments for the first six months. If the Company is successful in obtaining a PPP loan, we intend to use the proceeds for purposes consistent with the PPP and expect to meet the conditions for forgiveness of the loan.                                                              
Cash $ 18,400                                                              
Subsequent Event [Member] | Credit Facility [Member]                                                                
Cash                                                         $ 3,400      
Subsequent Event [Member] | Maximum [Member] | Credit Facility [Member]                                                                
Cash 8,000                                                       8,000      
Subsequent Event [Member] | Minimum [Member] | Credit Facility [Member]                                                                
Cash 4,000                                                       4,000      
Subsequent Event [Member] | Preferred Stock [Member]                                                                
Public offering generating net proceeds   $ 19,500                                                            
Sale of common stock   20,000                                                            
Security Purchase and Exchange Agreement [Member]                                                                
Line of credit facility                                                               $ 4,000
Equity Distribution Agreement [Member]                                                                
Public offering generating net proceeds     $ 4,800                                                          
ATM Agreement [Member]                                                                
Public offering generating net proceeds                                             $ 8,000                  
Small Business Administration [Member] | Subsequent Event [Member]                                                                
Loans payable                                                         3,500      
Department of Health and Human Services [Member] | Subsequent Event [Member]                                                                
Loans payable                                                         650      
Proceeds from loans payable 650                                                              
Centers for Medicare & Medicaid Services [Member] | Subsequent Event [Member]                                                                
Loans payable                                                         $ 2,100      
Proceeds from loans payable $ 2,100