Quarterly report pursuant to Section 13 or 15(d)

Liquidity and Financial Condition (Details)

v3.20.2
Liquidity and Financial Condition (Details) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 9 Months Ended
Oct. 15, 2020
Aug. 20, 2020
May 24, 2019
Sep. 30, 2020
Sep. 30, 2019
Jun. 30, 2020
Dec. 31, 2019
Jun. 30, 2019
Dec. 31, 2018
Purchase Commitment       $ 37,153          
Deposits paid       12,803          
Cash and cash equivalents       30,086 $ 15,163   $ 7,440   $ 225
Cryptocurrencies       9,000          
Working capital       39,300          
Stockholders' equity       60,668 28,191 $ 27,809 26,235 $ 26,138 $ 4,491
Accumulated deficit       233,822     $ 217,238    
Proceeds from the sale of stock       49,551 $ 23,611        
H.C. Wainwright [Member] | Termination of 2019 ATM Offering [Member] | Subsequent Event [Member]                  
Gross proceeds $ 74,000                
Number of shares sold 30,600,000                
Common Stock [Member]                  
Stock issued during period   200,000              
Common Stock [Member] | H.C. Wainwright [Member] | Subsequent Event [Member]                  
Maximum amount of sales shares $ 100,000                
Percentage of commission 3.00%                
Common Stock [Member] | H.C. Wainwright [Member] | 2019 ATM Offering [Member]                  
Maximum amount of sales shares     $ 100,000            
Proceeds from the sale of stock       $ 49,600          
Percentage of commission       3.00%          
Commsion paid       $ 1,600          
Weighted average price       $ 2.23          
Stock issued during period       22,210,095          
Common Stock [Member] | H.C. Wainwright [Member] | 2020 ATM Offering [Member] | Subsequent Event [Member]                  
Maximum amount of sales shares $ 100,000                
Percentage of commission 3.00%                
Miners received from Bitmain [Member]                  
Purchase Commitment       $ 37,200          
Deposits paid       12,800          
Remaining amount due in second quarter of 2021       $ 24,400