Quarterly report pursuant to Section 13 or 15(d)

Organization and Summary of Significant Accounting Policies (Details Narrative)

v3.20.2
Organization and Summary of Significant Accounting Policies (Details Narrative) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended 12 Months Ended
Feb. 06, 2020
Sep. 12, 2019
Jul. 26, 2019
Oct. 02, 2018
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Dec. 31, 2019
Reverse stock split     1 for 30 reverse stock split            
Net income (loss)         $ (4,028) $ (730) $ (2,859) $ (2,359)  
Net cash used in operating activities             (4,938) $ (3,333)  
Accumulated deficit         $ (236,937)   (236,937)   $ (234,078)
Proceeds from issuance of public offering $ 9,400                
Underwriting discounts and commissions and offering expenses payable $ 1,200                
Non interest note receivable       $ 6,000          
Debt description       The 36-month term of the note receivable requires 18 payments of $138,889 followed by 18 payments of $194,444, with maturing of the note receivable on October 1, 2021.          
Maturity date of note receivable       Oct. 01, 2021          
Following 18-Month Payment Period [Member]                  
Proceeds from notes receivable             $ 3,100    
Two Registered Direct Offerings [Member]                  
Number of shares issuance cost             6,100,000    
Proceeds from issuance cost             $ 9,600    
Stock offering expense             $ 800    
ATM Equity Distribution Agreement [Member]                  
Proceeds from issuance of public offering   $ 2,500              
Number of stock sold during period             354,500   527,896
Sale of stock value             $ 800   $ 1,700
Stock offering expense             $ 34   200
ATM Equity Distribution Agreement [Member] | Maximum [Member]                  
Proceeds from issuance of public offering   $ 2,500             $ 2,500