Quarterly report pursuant to Section 13 or 15(d)

Common and Preferred Stock (Details)

v3.20.2
Common and Preferred Stock (Details)
1 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended
Oct. 15, 2018
USD ($)
$ / shares
shares
Oct. 10, 2018
shares
Sep. 11, 2017
USD ($)
D
$ / shares
shares
Aug. 05, 2016
USD ($)
Oct. 31, 2018
$ / shares
Jun. 30, 2020
USD ($)
$ / shares
shares
Jun. 30, 2019
USD ($)
shares
Jun. 30, 2020
USD ($)
$ / shares
shares
Jun. 30, 2019
USD ($)
shares
Dec. 31, 2019
$ / shares
Dec. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares 13,672,173                      
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares $ 1.38       $ 1.38              
Preferred Stock Redemption Discount                     $ 9,100,000  
Percentage of issue of the public offering         120.00%              
Common Stock, Discount on Shares           $ 3,800,000   $ 3,800,000        
Proceeds from Issuance or Sale of Equity $ 18,600,000                      
Over-Allotment Option [Member]                        
Stock Issued During Period, Shares, New Issues | shares 2,428,825 2,428,825                    
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares 2,428,825 2,428,825                    
Issue of warrants to purchase common stock | shares   1,807,826                    
Warrant [Member]                        
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares 13,672,173                      
Fbr Capital Markets Co [Member]                        
Stock Issued During Period, Value, New Issues       $ 40,000,000                
Brokerage Commission percentage       3.00%                
Series A Preferred Stock [Member]                        
Preferred Stock, Par or Stated Value Per Share | $ / shares           $ 0.001   $ 0.001   $ 0.001    
Preferred Stock, Dividend Rate, Percentage     2.00%             2.00%    
Preferred Stock Conversion Price Per Share | $ / shares     $ 18.90                  
Debt Instrument, Convertible, Threshold Trading Days | D     20                  
Debt Instrument, Convertible, Threshold Consecutive Trading Days | D     30                  
Dividends Payable, Amount Per Share | $ / shares     $ 70.00                  
Adjustments to Additional Paid in Capital, Stock Split     $ 7,875                  
preferred stock accrued dividends           $ 63,000 $ 61,000 $ 125,000 $ 122,000      
Preferred Stock Redemption Discount                       $ 6,900,000
Series A Preferred Stock [Member] | Private Placement [Member]                        
Stock Issued During Period, Shares, New Issues | shares     120,000                  
Preferred Stock, Par or Stated Value Per Share | $ / shares     $ 0.001                  
Proceeds from Issuance of Convertible Preferred Stock     $ 12,000,000                  
Sale of Stock, Consideration Received Per Transaction     $ 100                  
Series B Preferred Stock [Member]                        
Preferred Stock, Par or Stated Value Per Share | $ / shares $ 1,000         $ 1,000   $ 1,000   $ 1,000    
preferred stock accrued dividends           $ 392,000 $ 117,000 $ 796,000 $ 515,000      
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares 13,672,173                      
Stock Issued During Period, Value, Issued for Services $ 1,000                      
Percentage Exceed Aggregate Number Of Common Stock         4.99%              
Percentage Exceed Aggregate Number Of Common Stock Outstanding         9.99%              
Increase Decrease in Excess of Other Percentage         9.99%              
Preferred Stock Shares Converted | shares           1,040 302 2,113 1,338      
Preferred Shares, Unamortized Discount From Conversion           $ 392,000 $ 117,000 $ 796,000 $ 515,000      
Conversion of Stock, Shares Converted | shares 13,672,173             10,198        
Common Class A [Member]                        
Stock Issued During Period, Shares, New Issues | shares 2,520,000                      
Shares Issued, Price Per Share | $ / shares $ 1.15                      
Common Class B [Member]                        
Stock Issued During Period, Shares, New Issues | shares 15,723                      
Preferred Stock Conversion Price Per Share | $ / shares $ 1.15